Men, how do I ask my partner to try giving me oral sex?

There’s this guy I’m dating. We’ve had sex loads of times. I’ve given him oral but he’s never given me oral. I asked him why he said he’s never done it before. He’s a lovely lover and I think if he tried it he’d be very good at it. How can I ask him if he would consider doing it to me? Because I worry if he’s never done it, never contemplated it then he might shut me down with a no.
Men, how do I ask my partner to try giving me oral sex?
Post Opinion