I've been taking out underlining issues in comment sections. Time to make a post and find some help and support.

>BM and my BF married, she constantly cheated. (At least 3x a month) Used him and his money. Had 2 kids they divorced once he figured she couldn't settle down. Took him over 5 years to recover.

She moved to another state with a man (who is ok with her sleeping with other men and women).

>BF and I met 3 years ago and began an AMAZING relationship. These kids are my kids (in my heart). I have two of my own but his mean everything to me, too. She barely saw them and NEVER helped financially support them. (Broke custody by not seeing them, quit her job and lives off new bf so she doesn't have to pay child support)

She doesn't like that we have a nice little family going on here. Came into their lives less than two years ago.

Now she is trying to take them to her state to go to school and live with her. It's tearing my Bf apart. The kids are emotionally wrecked because they want to know mommy but not hurt daddy. She has bad habits that I'm afraid will be reflected onto the kids. (Bi-polar, codependent, and VERY open about her sexual fetishs!) He wants to say no but doesn't want to deny them the only opportunity they've had in 10 years to know her. (Though I don't think she deserves to know these amazing children and have the chance to ruin them!)

Oldest asked me today what I would do if I had to decide between my mommy and daddy. I just cried and told him I don't know baby.... They will love you no matter what you choose though.