The f bomb

Cristine • First time Mom, with 4 step kids. Can't wait to meet my baby girl in March 💕💜💕
My fiancé constantly uses the f word. Like in every day normal conversation. And of course when he is upset. This morning while we were just talking it was f this and f that and a f here and a f there. So I asked him to watch him mouth around the baby. He got upset and said "I don't need a mom". She's only 6 weeks but I don't like it and I'm asking him to respect my wishes. Any thoughts, or opinions. I'll respect them of both sides.