diff --git a/app/[slug]/dashboard/guests/page.tsx b/app/[slug]/dashboard/guests/page.tsx
index beb73f8..0d68edc 100644
--- a/app/[slug]/dashboard/guests/page.tsx
+++ b/app/[slug]/dashboard/guests/page.tsx
@@ -2,8 +2,10 @@
 
 'use client';
 
-import { AbstractApi,  } from '@/app/api/abstract-api';
+import { AbstractApi, } from '@/app/api/abstract-api';
+import { Group, GroupSerializer } from '@/app/lib/group';
 import { Guest, GuestSerializer } from '@/app/lib/guest';
+import AffinitiesFormDialog from '@/app/ui/components/affinities-form-dialog';
 import { classNames } from '@/app/ui/components/button';
 import GroupFormDialog from '@/app/ui/components/group-form-dialog';
 import GuestFormDialog from '@/app/ui/components/guest-form-dialog';
@@ -12,7 +14,6 @@ import SkeletonTable from '@/app/ui/guests/skeleton-row';
 import GuestsTable from '@/app/ui/guests/table';
 import { TabPanel, TabView } from 'primereact/tabview';
 import { Suspense, useState } from 'react';
-import { Group, GroupSerializer } from '@/app/lib/group';
 
 
 export default function Page() {
@@ -34,6 +35,8 @@ export default function Page() {
   const [groups, setGroups] = useState<Array<Group>>([]);
   const [groupBeingEdited, setGroupBeingEdited] = useState<Group | undefined>(undefined);
 
+  const [groupAffinitiesBeingEditted, setGroupAffinitiesBeingEditted] = useState<Group | undefined>(undefined);
+
   const [guestsLoaded, setGuestsLoaded] = useState(false);
   const [guests, setGuests] = useState<Array<Guest>>([]);
   const [guestBeingEdited, setGuestBeingEdited] = useState<Guest | undefined>(undefined);
@@ -77,11 +80,19 @@ export default function Page() {
               onHide={() => { setGroupBeingEdited(undefined) }}
             />
 
+            <AffinitiesFormDialog
+              groups={groups}
+              group={groupAffinitiesBeingEditted}
+              visible={groupAffinitiesBeingEditted !== undefined}
+              onHide={() => { setGroupAffinitiesBeingEditted(undefined) }}
+            />
+
             <Suspense fallback={<SkeletonTable />}>
-              <GroupsTable 
+              <GroupsTable
                 groups={groups}
                 onUpdate={refreshGroups}
                 onEdit={(group) => setGroupBeingEdited(group)}
+                onEditAffinities={(group) => setGroupAffinitiesBeingEditted(group)}
               />
             </Suspense>
           </div>
diff --git a/app/lib/affinities.tsx b/app/lib/affinities.tsx
new file mode 100644
index 0000000..6c1023e
--- /dev/null
+++ b/app/lib/affinities.tsx
@@ -0,0 +1,5 @@
+/* Copyright (C) 2024 Manuel Bustillo*/
+
+export class Affinities {
+  [key:string]: number;
+}
\ No newline at end of file
diff --git a/app/ui/components/affinities-form-dialog.tsx b/app/ui/components/affinities-form-dialog.tsx
new file mode 100644
index 0000000..7428233
--- /dev/null
+++ b/app/ui/components/affinities-form-dialog.tsx
@@ -0,0 +1,69 @@
+/* Copyright (C) 2024 Manuel Bustillo*/
+
+'use client';
+
+import { Affinities } from '@/app/lib/affinities';
+import { Group } from '@/app/lib/group';
+import { getCsrfToken, getSlug } from '@/app/lib/utils';
+import { classNames } from '@/app/ui/components/button';
+import { Dialog } from 'primereact/dialog';
+import { useEffect, useState } from 'react';
+import AffinitySlider from './form/affinitySlider';
+
+export default function AffinitiesFormDialog({ groups, group, visible, onHide }: {
+  groups: Group[],
+  group?: Group,
+  visible: boolean,
+  onHide: () => void,
+}) {
+  const [affinities, setAffinities] = useState<Affinities>({});
+  const [isLoadingAffinities, setIsLoadingAffinities] = useState(true);
+
+  useEffect(() => {
+    setIsLoadingAffinities(true);
+    if (group?.id === undefined) {
+      setAffinities({});
+      setIsLoadingAffinities(false)
+    } else {
+      fetch(`/api/${getSlug()}/groups/${group?.id}/affinities`)
+        .then((response) => response.json())
+        .then((data) => {
+          setAffinities(data);
+          setIsLoadingAffinities(false)
+        });
+    }
+  }, [group]);
+
+  function submitAffinities() {
+    const formattedAffinities = Object.entries(affinities).map(([groupId, affinity]) => ({ group_id: groupId, affinity: affinity }));
+    fetch(`/api/${getSlug()}/groups/${group?.id}/affinities/bulk_update`, {
+      method: 'PUT',
+      headers: {
+        'Content-Type': 'application/json',
+        'X-CSRF-TOKEN': getCsrfToken(),
+      },
+      body: JSON.stringify({ affinities: formattedAffinities })
+    }).then(() => {
+      onHide();
+    });
+  }
+
+  return (
+    <Dialog header="Update affinities" visible={visible} style={{ width: '60vw' }} onHide={onHide}>
+      {!isLoadingAffinities && <div className="card justify-evenly py-5 bg-gray-200 flex flex-col">
+        <span className="text-center p-4">Describe the affinity with the rest of the groups</span>
+
+        {
+          groups.filter((currentGroup) => currentGroup.id !== group?.id).map((group) =>
+            <div key={group.id} className="flex flex-row hover:bg-gray-300 px-3 py-2 items-center">
+              <span className="w-1/3 text-right px-4">{group.name}</span>
+              <AffinitySlider value={group.id && affinities[group.id] || 1} onChange={(value) => setAffinities({ ...affinities, [group.id || "default"]: value })} />
+            </div>)
+        }
+
+        <button className={classNames('primary')} onClick={submitAffinities} >Update</button>
+      </div>
+      }
+    </Dialog>
+  );
+}
\ No newline at end of file
diff --git a/app/ui/components/form/affinitySlider.tsx b/app/ui/components/form/affinitySlider.tsx
new file mode 100644
index 0000000..f541e4d
--- /dev/null
+++ b/app/ui/components/form/affinitySlider.tsx
@@ -0,0 +1,33 @@
+/* Copyright (C) 2024 Manuel Bustillo*/
+
+import { Slider } from 'primereact/slider';
+
+export default function AffinitySlider({ value, onChange }: { value: number, onChange: (value: number) => void }) {
+
+  const label = (value: number) => {
+    if (value < 0.2) {
+      return 'Nemesis';
+    } else if (value < 0.5) {
+      return 'Enemies';
+    } else if (value < 0.9) {
+      return 'Bad vibes';
+    } else if (value < 1.1) {
+      return 'Neutral';
+    } else if (value < 1.5) {
+      return 'Good vibes';
+    } else if (value < 1.8) {
+      return 'Good friends';
+    } else {
+      return 'Besties';
+    }
+  }
+
+  return (
+    <>
+      <Slider value={value} min={0} max={2} step={.1} onChange={(e) => onChange(e.value)} className='w-80 bg-gray-400' />
+      <span className="px-4 w-1/5">
+        {label(value)}
+      </span>
+    </>
+  )
+}
\ No newline at end of file
diff --git a/app/ui/components/group-form-dialog.tsx b/app/ui/components/group-form-dialog.tsx
index d652a13..cc96348 100644
--- a/app/ui/components/group-form-dialog.tsx
+++ b/app/ui/components/group-form-dialog.tsx
@@ -2,18 +2,17 @@
 
 'use client';
 
+import { AbstractApi } from '@/app/api/abstract-api';
+import { Group, GroupSerializer } from '@/app/lib/group';
 import { classNames } from '@/app/ui/components/button';
-import { Dialog } from 'primereact/dialog';
 import { ColorPicker } from 'primereact/colorpicker';
+import { Dialog } from 'primereact/dialog';
 import { Dropdown } from 'primereact/dropdown';
 import { FloatLabel } from 'primereact/floatlabel';
 import { InputText } from 'primereact/inputtext';
 import { useState } from 'react';
-import { Group, GroupSerializer } from '@/app/lib/group';
-import { ApiError } from 'next/dist/server/api-utils';
-import { AbstractApi } from '@/app/api/abstract-api';
 
-export default function GroupFormDialog({groups, onCreate, onHide, group, visible }: {
+export default function GroupFormDialog({ groups, onCreate, onHide, group, visible }: {
   groups: Group[],
   onCreate?: () => void,
   onHide: () => void,
diff --git a/app/ui/groups/table.tsx b/app/ui/groups/table.tsx
index 41af307..253c271 100644
--- a/app/ui/groups/table.tsx
+++ b/app/ui/groups/table.tsx
@@ -2,18 +2,18 @@
 
 'use client';
 
-import { Group, GroupSerializer } from '@/app/lib/group';
-import TableOfContents from '../components/table-of-contents';
-import { MapPinIcon, PencilIcon, TrashIcon } from '@heroicons/react/24/outline';
 import { AbstractApi } from '@/app/api/abstract-api';
-import { TreeTable } from 'primereact/treetable';
+import { Group, GroupSerializer } from '@/app/lib/group';
+import { AdjustmentsHorizontalIcon, PencilIcon, TrashIcon } from '@heroicons/react/24/outline';
 import { Column } from 'primereact/column';
 import { TreeNode } from 'primereact/treenode';
+import { TreeTable } from 'primereact/treetable';
 
-export default function GroupsTable({ groups, onUpdate, onEdit }: {
+export default function GroupsTable({ groups, onUpdate, onEdit, onEditAffinities }: {
   groups: Group[],
   onUpdate: () => void,
   onEdit: (group: Group) => void,
+  onEditAffinities: (group: Group) => void,
 }) {
 
   const api = new AbstractApi<Group>();
@@ -23,6 +23,7 @@ export default function GroupsTable({ groups, onUpdate, onEdit }: {
     <div className="flex flex-row items-center">
       <TrashIcon className='size-6 cursor-pointer' onClick={() => { api.destroy(serializer, group, onUpdate) }} />
       <PencilIcon className='size-6 cursor-pointer' onClick={() => onEdit(group)} />
+      <AdjustmentsHorizontalIcon className='size-6 cursor-pointer' onClick={() => onEditAffinities(group)} />
     </div>
   );