do you feel in your gut that she is messaging another guy?

dont do it dude. Have a talk about the lack of convo between you two.. Do not ask to see her texts. She will flip and there will be an argument. At least have some dignity and go thru her texts when she asleep lol

the thing here is this. He knows he can get away with this crap because im betting he has many times in the past with you to no repercussions whatsoever. So maybe its time for a change.

move out! Thats your next option.

Thats exactly what hes doing. He clearly cares more about having fun with people than respecting your boundaries. Your move now. Stay or go? You clearly dont trust him or this wouldnt even be an issue. So why are you with someone who you think is shady and cant trust?

ive heard there are two sep sections, one for friends and one for dating.

she literally cut you out of pics, and what a coincidence, shes on a dating app with those said pics....come on man, you are in a relationship with a woman who apparently wants to date others. I mean if youre okay with that, then great. But doesnt sound like you are. You are 100 percent naïve though, if you think this was a mistake.

she literally wrote to her friend "I kissed a guy". Thats the truth right there. If you cant get past this, plus the other things shes done to you, then end it. Dont waste time.