How long does it take you to get over an ex?

I was with my 2nd boyfriend at the age of 17 he was 23.I was very much in love with him. He had just moved from up north about 4 hours away. 6 months in to our relationship, I found out I was pregnant. He decided he needed time to think and went back to his hometown to stay with his mom. The night he left I got a text from his girlfriend. They had been together for 6 years. He had just got out of jail (which I did not know) and came down to where I live to "get his life together". And he had been planning on moving back for weeks. And he never came back. Oh wait...I didn't tell you the best part...his girlfriend is a transsexual drag queen that works at night clubs dancing and lip syncing. Straight Ru'Paul shit. The 1st 5 months of my pregnancy was spent fighting with his girlfriend as she told me how worthless I am. I know go to court every month to fight for child support. I had to take a paternity test to prove the guy I gave my virginity is my sons father. It's been 3 years and I have not dated since.