Getting a girl busted for cheating on her boyfriend?

I want to get her busted by her boyfriend cheating on him with me but I don't want it to look like it was me

of course I've thought of fakes socials and emails but it's too obvious.

Can anyone think of any other way taking into account anything simple I going to get blamed for.

Updates
4 mo
Thank you all for your comments I'll take them on board and no I didn't know until today after 6 months she had a boyfriend so yes I feel a little stupid and angry about it. I'm just shitty that I was played like that and think I would want to be told if that happened to me, but that's my opinion just like all the comments.
Getting a girl busted for cheating on her boyfriend?
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