he needs to associate you with sexy. so find out guys he thinks are sexy and try to get him to associate those guys with you. like 50 pictures of really smoking guys and have a pic of you too in there. maybe a couple. wait a few days do the same thing different pictures. he will notice your picture and be like hmmm then you can talk about it and say hey i just met you and this is crazy but heres my dick. so suck it maybe?