Mutual girlfriend

So, I've been very bi-curious, I guess you would say. I have kissed two girls before. And I am attracted to women as well as men.

I am married, but my husband knew before and has been 100% supportive of me. Thing is, I Love his long time friend. She and I have talked about things and she is curious too. My husband of course would love to be a part of a relationship with both myself and the other woman.

Will this type of relationship work? Or am I just hoping for something that will end in disaster?

(Note: *I have children and she has children. Would this be an issue?)