i dont think he'll be able to tell. just try not to hesitate or anything when it happens and u should be fine. and dont embarrased about it, its not lame. u dont have to tell him if u dont want to anyway. and even though u dont have any experience with this, kissing is really easy. ull pick it up straight away if u dunno wat to do :) lol, im 17 and i got my first kiss a month ago, so dont worry, i feel lame too, but we shouldn't. lol my mum says that its a good thing cos im being responsible and stuff, haha oh well. so yeah dont hesitate and it'll be fine. but if he does ask if its ur first kiss, dont lie, tell him. he shouldnt mind, and if he does then u deserve some one better. i hope i helped u out, good luck!!