diff --git a/Sources/src/data/core/network/IFriendRequestService.php b/Sources/src/data/core/network/IFriendRequestService.php
new file mode 100644
index 00000000..bcff3699
--- /dev/null
+++ b/Sources/src/data/core/network/IFriendRequestService.php
@@ -0,0 +1,6 @@
+<?php
+interface IFriendRequestService {
+    public function sendRequest($fromUserId, $toUserId);
+    public function acceptRequest($requestId);
+    public function declineRequest($requestId);
+}
\ No newline at end of file
diff --git a/Sources/src/data/core/network/INotificationService.php b/Sources/src/data/core/network/INotificationService.php
new file mode 100644
index 00000000..ec619006
--- /dev/null
+++ b/Sources/src/data/core/network/INotificationService.php
@@ -0,0 +1,5 @@
+<?php
+
+interface INotificationService {
+    public function sendNotification($toUserId, $notification);
+}
\ No newline at end of file
diff --git a/Sources/src/data/model/User.php b/Sources/src/data/model/User.php
index 3937d77b..d7753da1 100644
--- a/Sources/src/data/model/User.php
+++ b/Sources/src/data/model/User.php
@@ -4,7 +4,17 @@ use Model\Role;
 
 // Data Class
 
+/**
+ * Class User
+ * 
+ * Represents a user in the system
+ */
 class User{
+     /**
+     * @var array List of friends associated with the user
+     */
+    private array $friendsList;
+    
     public function __construct(
         private int $id,
         private string $nom,
@@ -16,7 +26,9 @@ class User{
         private float $poids,
         private \DateTime $dateNaissance,
         private Role $role,
-    ) {}
+    ) {
+        $this->friends = array();
+    }
     public function getId(): int {
         return $this->id;
     }
diff --git a/Sources/src/data/model/manager/UserManager.php b/Sources/src/data/model/manager/UserManager.php
index f426e5bf..72b774d0 100644
--- a/Sources/src/data/model/manager/UserManager.php
+++ b/Sources/src/data/model/manager/UserManager.php
@@ -1,8 +1,10 @@
 <?php
 namespace Manager;
 
+use IFriendRequestService;
 use Model\Athlete;
 use Model\Coach;
+use Model\User;
 use Network\IAuthService;
 use Shared\Validation;
 
@@ -11,7 +13,12 @@ use Shared\Validation;
 class UserManager
 {
     private IAuthService $authService;
-    public function __construct(IAuthService $authService)
+
+    private IFriendRequestService $friendService;
+
+    private User $currentUser;
+
+    public function __construct(IAuthService $authService,IFriendRequestService $friendService)
     {
         $this->authService = $authService;
     }
@@ -27,6 +34,14 @@ class UserManager
         return false;
     }
 
+    public function addFriends($newFriendId) {
+        // should verifie si l'user exist si il existe pas return paas ajouter
+        // verifier si il est pas déja dans la liste des amis
+        // 
+        $this->friendService->sendRequest($this->currentUser->getId(), $newFriendId);
+        // if est bien ajouter 
+    }
+
     public function register($loginUser, $passwordUser,$data): bool
     {
         // foreach ($data as $entry) {