you need to wait until you really trust him! The while you are sitting sort of close to him lean in a Little bit closer to him. make sure he is not backing away or it won't work, you need to be talking about something that is not really interesting. or the kiss won't last long. if he is leaning in too, that means he will lean in the rest of the way and there you go an official kiss is about 3 second but a Little less is OK