I had an abortion when i was 18 and it was the best thing I could've done for myself at the time. If the time is not right to have a child(and it doesn't sound like it is) then it is cruel to being an innocent being into an unplesant situation. Adoption can be complicated as so many women don't go through with it in the end and soemtimes kids end up in foster homes and feel unwanted.
Anyhow...jsut my two pence worth. i have neever regretted my abortion. i told no one and never will. I was about 18 weeks and had the procedure done in an hour. it was mostly painless and I knwo that my life would've been far more messed up if I had had a kid when i was a kid myself.
It isn't an easy undertaking morally if you believe that a few cells is a baby, but i don't. I am very liberal and pro choice and each woman should decide for herself. Good luck, whatever you decide to do. And keep away from this lying man.