Running Out Of Time Stolen Seed
I think you shouldn't lie to him about being on birth control. Permanent consequences for a temporary itch. Plus your child will be the one to mostly carry the burden, not you.
You have more time than you think. If you did what you are thinking, that would be deceptive and low. Not only that, but think of the kid, there's a chance this man would stay with his wife, so your child wouldn't have his biological father. Wouldn't be good. Something to think about.
Having him impregnate you without him knowing is wrong in so many way. To him, his wife, his family, and the child. It sounds like hes been honest with you, but you wont be with him?
I think you should win enter into the whole friends with benefits things with him… and see where that leads… if he’s not in a happy marriage will soon though… and then you can plan a shared future..
Don't be so selfish and inconsiderate. First of all leave married men alone. Secondly every child should have a mother and a father they can rely on whether or not they're married. Thirdly what kind of person are you that lying and premeditatedly committing adultery are no big deal to you? What kind of mother would you be? It's no wonder you don't have any men asking you out.