What the hell is considered cheating?

I was with a guy, on our first date and he asked for a kiss.

We kissed.

Then he said "No further than kissing though cause I have a girlfriend and don't want to cheat on her".

I said "but you asked to kiss, that IS cheating".

And he said "Nah".

Obviously I kicked his ass out but I wanna know do other guys think this way?

What the hell is considered cheating?
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