need help after break up

It's been a while since i've posted something but that's cuz i had a gf and i really wasn't interested in PU at all but now i'm here cuz i need advice.
I broke up with her, but the thing is i feel so much guilt and pain.We've known each other for over a year now and when i met her she was engaged, when i fell in love with her i destroyed her fiancee.She was always against us dating cuz she is 10 yrs older and is a teacher at my university but then i still got her thax to pandora's box, and she fell in love with me.She's over 30 now and probably will never get married cuz where i'm from women rarely find husbands when they are over 30. I don't know i fell like i wrecked her life and i don't want to be the cause of that cuz i still care for her deeply but only as a friend. So as i said before i am racked with pain and guilt.
PLZZ HELP! ANYTHING will do.

Daang bro sounds like a tough situation. Though it's always been one of my dreams to sleep with a teacher or a nurse, I prefer to destroy a boyfriend when there's not too much going on in the relationship, but when they are about to get married, i wouldn't intervene unless i really like the girl for more than just sleeping with her. Although you did say you fell in love with her. I mean if the girl is beautiful, i don't think she's have trouble finding a guy. Since she's probably hurt and doesn't want anything to do with a relationship, introduce her to a friend bro. Someone who desperately wants to get married or something and teach him a little bit of what you know about her.

Dude don't blame yourself .. the marriage would have been doomed anyway. If you 10 years younger can wreck the relationship ... how long do you think it would have lasted before someone else wrecked it??