<human>: So, I've been kind of "with" someone for a few months. She was with someone when things first started happening and then she said she needed time to think about it before ending anything with him. We carried on what we were doing (sleeping together, making love and so on) and now she has moved to another college. At this point she has broke up with him, about a week before leaving and continues to talk to us both. She seems like she has left him. Up until a week ago I thought nothing of this, I truly believed her and then she started talking about how he wanted her back and that she didn't want him. 

I thought this was very strange and she seemed like she was hiding something so, I did as the only way I thought I could find out the truth for real. I broke into her Facebook and looked at the messages. I know how terrible it was but it was the only way I could be certain. I know she isn't my girlfriend but I'm great with computers and well... I don't like to be fucked with. I got into it and saw messages from him about how much they missed each other and things like that. I asked her if she loved him still and she straight up said no. Which, is obviously, a lie. 

I checked it again this morning as she seemed like she was hiding even more and so when I did it, it had her conversing with him about him wanting her and him sending her (dirty) pictures. She said she sent one back that was "kinda clean" (the message said "sorry it's kinda innocent"). A little bit later today I asked her if she had anything to tell me since she "felt bad" and she said no. I even asked if there is anything I should know and she said the same. 

I honestly do think Iove her but another part of me just wants to expose her for who she is. I'm shaking and it's really horrible. What should I do?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Brakes up with boyfriend when she moves out of town, says its for me and yet gets nudes from boyfriend still.