Is it weird for a women to not give their boyfriend a blow job?

I’ve told my boyfriend that I was uncomfortable doing that kind of thing and he won’t let it go. Every time we do anything he wants me to give him a blow job and I don’t know why he try’s to force me to do it. I don’t feel like I’m that kind of women that can physically do that. It’s not that I’m not ready for that but it just isn’t my thing.