>Friend invites me to play multiplayer game
>"Sure let's play"
>We start a new playthrough and play for an hour
>On the next day he says he's kinda busy and can't play
>He's actually lying and he played the game with someone else on OUR playthrough / save file
>On day 3 his other friend is busy so invites me again
>The playthrough has changed completely and he's like hours ahead of me in progress
>He insists that he didn't touch the game and tells me to stop acting like a schizo
Why are multiplayer fags like this?