This guide will tell you how to Accept Friend Requests in Call of Duty Modern Warfare 2.
First, you have to open the home screen of your game and press the options button. Then click on Social from the menu.
At the top of your screen, you have to go to the friend’s tab and click on Friends Request in the middle of the screen. It will show you all the friend requests on the right side of the screen and you have to click on the request you want to accept. After that, click on Accept.