What are the rules of the game?
If a guy has a girlfriend, is it OK to go after him if you like him? If not, how do people meet Mr/Ms Right? We'd all most likely stay with the first person we started going out with.
If a guy is in a long term relationship but not living with his girlfriend?
If he's living with his girlfriend?
If a guy is engaged, is it still OK to go after him? What if he's making a mistake and can't see that you're the one for him?
If they've got kids together (and are together) but not living together?
If they have got kids together and are living together?
If they are married?
All different grades of commitment. I just see marriage as the ultimate contract. I know people don't see it as that anymore, but I just think if marriage isn't a contract to commitment and is 'just a piece of paper', then why does anybody get upset when they are cheated on, be it a husband/wife/girlfriend/babyfather whatever.
Why do we insist on fidelity especially when we don't believe in marriage?