should I call him daddy?

so new bf of 2 weeks (I'm 19 female, he's 22 male) and we're really into each other. we haven't had sex because I'm not ready yet and he's being patient, but we've done everything else. we're very affectionate/physical and he knows that I'm pretty kinky and I think he's starting to get that I like being dominated. anyways, that's just the background info so the point is that I wanna call him daddy but I'm not sure if he would be comfortable with it so I just want advice i guess... like should I ask him if he'd like that or just say it while we're getting physical and see how he responds??? please help!!