You've been in a relationship for 1 year, but throughout the relationship he was cold and emotionless, always too busy

One day you decided to break up with him

"You know if I can't force you to stay with me I could always conceive you with a child so you won't be able to get away from me" Says jokingly with a slight grin on his face

You can tell you won't be able to break up with him what will you do?