Daddy?

Is it normal to think it’s not hot to call him daddy? Like I was all for it until I started dating a man 15 years older than me. Literally. I was 19 he was 35. I never liked the idea once I started dating him. Now we’re not together I have a 26yr old. I’ll be 24 in a few days. And he likes me to call him daddy but I really cringe at it 🙃 what do I do? I already feel bad Bc I won’t do a 3sum with a girl. He respects it but still yanno?… I need to learn how to use it so I get enjoyment out of it…