Hello...My best friend is Pisces sun/Sag moon/Gemini asc... close to that of your friend's.
I'll tell you what my best friend is like: He hates confrontations. Can't decide on anything worthwhile. Don't like hurting other people (His wife plays on this one like there is no tomorrow). Uses jokes as a means of escape when he's hurt. Lots of fantasies and escapes. Don't like being judged. Do not "accuse" him of anything. Rather, "suggest". Pisces are very receptive of suggestions. If you put suggestions like "perhaps we should start seeing each other because we are so compatible"; see what happens
He is fun. Loads of it. If you can have fun with him, he'll come back time and time again. My friend has Venus is Aquarius, so friendship is very important to him. I can tell you that at the moment, he and I are the best of friends because I don't judge him. He cannot stand people who points out his faults. He knows what they are, thank you very much. Just leave them be. lol.
I hope that helps.
Miss Muffet
PS forgot to add: He loves SEX. If you can play up to his ideal "sexy" woman, you will have it made. Let him discover how much he likes your company on his own time and he'll eventually come to you. Good luck!