Replaced Groom Before the Wedding

Summary

One month before the wedding, my fiancé decided to have a child with his late best friend's widow.

I didn't lose my cool. I just calmly sent him a message:

"She has plenty of ways to have a baby. Why does it have to be with you?"

The next second, he called me, screaming about how I was being unreasonable.

"My brother entrusted her to me on his deathbed. She doesn't have anyone else here to rely on. What's the big deal if I give her a child?"

"Besides, it's just in vitro fertiliza