Fatty's take: And this is now law. If you are dating someone who is jealous. Throw them back! It means they have NOOO confidence in themself and want to degrade and humiliate you because of that....... PERIOD! Best thing is to throw them some Trimspa and dump their ass.
don't be legalistic. what's in her heart? you can make all the "rules" you want about what is or isn't cheating. none of them will answer the question you really want to know.
there's no guideline for relationships. just tell her what type of loyalty and exclusivity you expect from her, and then respect what she asks of you. talk about it rather than piss and mope about it and doing nothing.
Its hard to tell but I'm looking at it this way. From what you're saying it sounds like she didn't initiate it since the guy was forcing himself on her. She might've given him a little kiss because he was pestering her and she figured she'll give him a little kiss and then say, "OK I've given you a kiss like you asked so now run along now." In that case I wouldn't say it was cheating since he forced himself on her and was pressuring her and she was just trying to get rid of him in a nice way.
I don't know about that. Since her boyfriend was there, she could've just said "Get away from me freak before I get my BF to kick your f*ing ass." If a girl doesn't like a guy, she is not going to give out any free samples, especially with her boyfriend around.