Omg please someone tell me what to do!!!!!!?

I have no clue what to do about something..long story short im inlove with this guy and he knows it i have known him for 12 yrs ..I am 24 and hes 29.Heres the short story he broke up with his girl last yr around this time. And in August we started up back a ual relationship up again..we first started it when i was 21 but ended it when he got with his ex and moved in. I knew he wasnt looking for something major but i just wanted to spend time with him anyhow. Well i feel for him hard well we never were in a relationship but i was faithful anyhow, about 2 months ago he got with a girl and shes preg but having an abortion it is one of 5 guys. Well that hurt me bad and about 2 weeks ago i found out about it all the weekend was needless to say a hell of a weekend so much stuff came out and i said i was done and since then have distanced myself from him,he went home and then called me crying saying he was sorry and never meant to hurt me and feels so bad for doing it ..cont.