Just kiss him. He might say no - he is not into it. What's that old say - I'll fuck and suck, but no kissing? Something like that. If you start to kiss him - always be prepared for a no. That way you cannot / will not be disappointed.
We had this conversation a long time ago on here. For some - kissing is too intimate. For some - it makes them feel gay, even though a cock in his mouth will not
It seems he took a chance with you - now, your turn to take the chance on others.