sexual relationship

How can I convince my GF to go down on me?

Anonymous
asks:
I'm 16 years old (my 17th birthday's in a month) and my girlfriend is 3 months younger than I am. We've been dating for 4 months now and she's not willing to actually do anything with me. I'm not talking about sex yet, as I realize how sensitive that issue is, but about simpler stuff like going down on me (I'll be more than glad to return the favor) etc....