If "Best friend" is a woman then the husband must enjoy three-somes.
You don't.
Her husdand.
Your best friend is not your best friend at all because if she was she would never hurt you in this way. She did so because she can and some women are jealous of their friends if they are married. Also when your best friend is around both you and your husband she may have fallen in love with him. Both your best friend and husband are to blame, but mainly your husband as he could have formed the word 'no' at the very beginning and chose not too. You would be wise to get rid of your best friend and let your husband know you are not putting up with him cheating. Good friends simply would not do this to hurt another friend.
Possibly her husband, M. Charbonneau.
i guess her husband
The friend of Kate's is Bob Carson, Beth Carsons husband. Beth is Kates best friend. She often watches the kids for Kate.
you curse him out and den try to make him jealous with his best friend
Don't tell her she is not your friend anymore that will just be easier for her to hit on him tell her he is not interested
Because both of them are close to me
No.
Julia Morgan Didn't have a husband, but had many good friends. Her best friend died in 1924