<human>: I had asked my girlfriend about 4 months ago if she has ever cheated on anybody. 

She explained that she wasn't really dating this guy, that they were just talking, and she had kissed somebody during that.

Not too big a deal, although I started wondering if she had done anything while her and I were talking, though she promised me she hadn't. Cool.

Last night we were talking and somehow got on that subject. 

Except this time she said she did with her last bf twice. Except the first time they weren't official so technically it isn't cheating. 

The second time, she was on vacation and ended up hooking up with somebody after clubbing (she wasn't drinking), while she was in a committed relationship with her then bf. 

She said she felt so guilty that she told her bf and somehow they worked it out, so she felt that didn't qualify as cheating. Plus, 'it was only a kiss'

That part alone bothered me; the fact that she didn't see kissing as cheating, and that since they worked it out she didn't cheat.

What bothered me just as much was the fact that she had lied to me earlier in the relationship when I asked her the first time, and her excuse for not telling me was *they weren't dating* so it wasn't cheating. Fair enough, but then why not tell me about the other times that 'weren't cheating'?

I'm obviously confused and a little hurt (is that stupid?), but even more hurt that she think I'm over reacting and that I should forget about it. Am I?

Can you condense the text into three sentences or less?
<bot>: Asked gf 4 months ago if she ever cheated, asked again last night and got different answers. Let it go?