You think she cheated on me?

Last night she uploaded a pic on insta the pic showed a snapshot of an iphone txt convo and the caption read "When he makes fun of me" i don't know who this guy is but it must be a friend.

The convo

Guy: You must be sleeping now which is why you aren't replying, but I just want you to know your the most beautiful thing ever yes even when your sleeping and twitiching lol

Yes my girlfriend does twitch in her sleep in other words these two must have been in bed cuddling at some point at the least or some bed business… My girlfriend never told me about this did she just cheat on me?

Yeah. Save the picture on instagram for proof! YOU ALWAYS NEED DA PROOF.

I think it would be wise to not go crazy and just see what happens… She might have been seeing him before you two met or something… Wich would explain how he knows about the twitching. And about the beautiful part, my best mate is a girl and I call her beautiful all the time… Its just friendly

That doesn't mean she cheated on you! Its likely he's just a friend, its not unusual for friends to sleep in the same bed without it being anything more. Just ask her about it, but don't do it in an accusing way. Its possible that she didn't mention it because its not something she ever thought of being a big deal.