Run, don't walk to the nearest counseling to figure out why you stayed with this jerk as long as you did. You don't owe his family or him any response. Just get out and away from them and go on with your life.
Get yourself tested for aids and other diseases and if the tests come back clean, thank your lucky stars and let them find someone else to play games with. They can only use you as long as you allow them to.
I promise that you will have the last laugh and your life and your self-esteem.
Good luck.