Best of both world until I get caught.

I have a boyfriend that is sooo good to me physically and sexually and we get along great but I have also been letting my ex husband come to my house and spend money on me and my children (his used to be step-children) I don't have sex with him although he would like to but he does spend money on me ALOT of money, even bought me a new car, but I get all my loving and GREAT sex from my boyfriend that lives 30 min. away. Yea I know, I know it's wrong but it's the best of both world's until I get caught. That's the only secret I have and now you know.