I need help

Dulce
Ok it's nothing about sex  my fiancé and I we try to get married but he has a baby Moma I know she is gonna be there forever but when we have two months I catch him send txt to her and he told her that he promise to never have kids with nobody and several times I catch him doing the same now he promise to me that he don't love her and he is no going to talk with her only with his daugther and about two weeks I ask him if we can have a baby and his answer was no I try to put in my mind that he don't love her but his promise I just can't forget