My boyfriend wants me to curse?

I've been in a relationship with this guy for a couple years, and recently he told me that he wished that i cussed. I'm not really that innocent but it's just something about cussing that leaves a bad taste in my mouth, and i've been brought up to not curse. It also goes against my faith. He doesn't cuss, but I think the reason he doesn't curse is because he knows how much i'm against it. I just feel really guilty for making him put up with this for so long and I don't know if I should concede and start to train myself to curse or keep doing what i'm doing.
My boyfriend wants me to curse?
Add Opinion