I have a guy I've been fuck buddies with for a few months now. Over the past two weeks he's started calling me babe? He never used pet names before and he doesn't use them on any of our friends and I'm not quite sure how to respond. I want to make it clear to him that unless he's expecting something other than just sex from me I don't want him to call me babe or anything like that. I also don't know how to word my response in a way that isn't harsh or rude. I don't want to end the fwb thing I just don't want terms of endearment.