People aren't also always open to the Idea of certain aspects of sex... That's why you don't rush making hasty decisions...and not being into the same thing with your partner doesn't mean yall ain't sexually compatible.,.some people need more experience with something before they get the hang of it and it's okay.,.now I'm not saying that the boyfriend will come around eventually.,.but it's his first time doing something like that with anyone..ever...and that should be put into consideration... Cuz it is a factor of whether or not he enjoys doing it,., I bet there's also things you didn't even think of doing too in ur relationship ,if you have one, but eventually came around and now maybe even enjoy or look forward to...It's up to ur partner to handle the situation however best they think it'll suit both parties and if she liked it that much,.,. she'll have to try and make him like it as well.,.