Sorry for being such a newbie to all this stuff but I really need advice quickly cos I don't wanna get cucked. Basically last night I sat next to my girlfriend while she was on her laptop and she quickly clicked out of this guys page (she told me once like 5 years ago when we weren't going out that she liked him) and she pretended to look at different things on her laptop. I look it up and he's in a band that has a gig on the 28th. She then, this morning, asks me the date. I say "the 25th, why?". She said her friend is coming home in a couple of days. I don't really trust her. While she's in the bathroom I look on her laptop and she's talking to the guy on Facebook and says " me and my friend were gonna meet up and go busking this weekend so it'd be a good opportunity to see one of your gigs". Bare in mind she's going to see her friend in a completely different location to where he is playing. She keeps clicking away really fast whenever I get up and she's on his page.

I think I should probably break up with her over this. I can't tell her why though because I invaded her privacy. What do you think I should do and why?