I am in love with my brother-in-law. I am married but am in love with the brother-in-law. What do I do?

I have been in love with my bro in law (husband's brother) for over 2 years, and had an affair with him for 2 years. My husband and i were seperated (after 7 years married) when it all started. His bro was going through his own divorce at the same time. Some time AFTER my divorce, my x husband found out about the affair. He was really angry with both of us at first. Ironically, my x husband has since forgiven me, and has rekindled a relationship with me. He said it's my "last chance." He has made me promise not to stray. And he says we will get remarried. Well, it has been really difficult because I love his brother, and his bro loves me. His bro calls me often, and turns me on with just the sound of his voice. When I am with my x husband, i picture myself with his bro just so i can get off. His bro keeps trying to get with me, even though he knows that i am back with his brother (my x). What i have done is committed myself to one man, my x husband, because i made a promise to him. I explained to my B-I-L that this affair must stop, and that we have to be strong. When i become tempted, i think back to the time when my hubby was drunk, trying to eat pizza, and was crying his eyes out... it's a visual thing that breaks my heart. I promised myself that i would never hurt him again. and i know this is my last chance, and i don't want to blow it. I just hope that i can continue to be strong. Just the other day, his bro about beat my door down trying to get me to answer. And i had to pretend i wasn't home, all in effort to keep from cheating. Also, when i get tepted, i just run to my hubby and give him all the affection that should be his and only his.
My advice is, don't become involved sexually, because that only complicates matters more, and will make it even harder for you to figure out your feelings. Take it from me, i have been in love with two men for a long time. At this point, i'm trying to keep us all from getting hurt.