I was with my ex for 10 years, we had 2 kids age 5 and 18 months
Within 2 weeks he had moved in with someone else, within 6 weeks she was pregnant and they were engaged. Within 3 months they were married, and she got all the fruits of the buisness I had helped him build up.
Had to fight him in the courts for child support, and his accountant helped him wriggle out of that.
It's very hard Rae, but it does get better. I really feel for you.
After I got over the rejection and the grieving, I counted myself lucky. I think it was only a few weeks after they married, that I first saw her with a black eye. So it seems she got all of the "benefits" of a relationship with him that I did.