Personally I think in this situation being able to communicate is great. I think losing someone that great over the kiss is sad. If you communicate with him and tell him you like it when he kisses you a certain way, if he's too rough, say you like it when he kisses you softly, or gently. If he's sloppy, or something else then you need to say to him without making a big deal out of it, maybe suggest trying a new kind of kiss so it doesn't make it so obvious that he's doing something you don't like. Just talk to him, kiss him the way you want him to kiss you and he may follow, try things, don't throw it all away over a bad kiss.
the first kiss is usually a bit awkward and it isn't always amazing but if I don't generally enjoy kissing him it means there is no chemistry there and I can't be in a relationship where there isn't chemistry. I don't expect it to be an amazing movie kiss but if we are good together it is usually at least enjoyable