Unless you are married or engaged, there is no commitment, therefore there is no such thing as cheating. You SHOULD however disclose to her that you BOTH can date around until such a time as you become exclusive which is ONLY a result of being engaged. Unless you two are engaged then you are free to date around and so is she.
leave her. plain and simple.
Apologise
text them (though that's looked down on) ring them apologise tell your friend to do it the list is endless.
No it is something that should not be tolerated, as these types of cheats will always cheat gain. If not today they will very well cheat tomorrow on your girlfriend So best is not to have anything tom do with them.
If you really care about your girlfriend, you tell her that you cheated on her and that you are really sorry you did. You promise you'll never do it again. (and don't do it again). If you're lucky, she'll forgive you.
Nope. Every guy cheats on his girlfriend. Even if he loves you. He likes other girls too. Not just you.
If you feel bad about it you can apologise.
Unless he decides to break up with his girlfriend because of his cheating you should probably leave him alone until he becomes available, it's best to just not get involved.
Yes but he cheats on her constantly
I had to apologise for my behaviour.
Apologised is the past participle of apologise.
Apologise has four syllables.