It was just a kiss with another guy.
And she stayed at his place to watch movies but she says nothing happened.
I don't trust her anymore anyways.
I find myself always wondering if she's lying to me.
Most Helpful Girl
You don't. So she was at some guy's house "watching movies" and all they did was kiss. Sorry, I don't buy that and neither should you. You need to leave her... she'll do it again if you forgive her. It wasn't an accident. If she wanted it to stop, then she could have stopped it, first by not going to his house alone. She'd played with fire and got burned. You're always going to wonder what she's doing when you're not around. And personally I wouldn't stress myself out worrying about if she's being faithful or not.1
Most Helpful Guy
Talk it over. Its just a kiss, people kiss each other in Europe just to say hello. Get an idea how she feels and try to have a no bs candid talk about how both of you feel about each other and what motivated her to do that, than make a decision not merely because you feel betrayed but make a decision via logic and see if both of you can learn and worth moving on together or separate. There is a chance she did it to sabotage the relationship because she knows how you would react so surprise her and be really cool about it but stern0