Oni-seigyoki
Well since he's a fellow guy and I like helping out. Practice makes perfect. You just need to give him more practice. No one is good or bad at kissing by the way its all preference, but the more you two do it the more he'll catch on to what you like.
This is kind of a mute point now; we broke up.
But I think part of the reason I didn't like his kissing, and also the main reason we broke up is because I discovered I just didn't really like him in that way. Or at least not as much as I initially thought.