I have been with my boyfriend for over a year now and he is the third guy I have slept with and definately the best, yet I still can't come!! From oral sex nor from intercourse...it is so frustrating as each time I reach a point where it feels really good and then that feeling just vanishes!!! Any pointers or ways of improving it...?? Thank you!!!

If you can cum consistently by masterbating then try and replicate that during sex. Do you like pressure on your pubic bone? Vibration or rubbing on your clit? Just experiment with yourself then try and get into a position with him that simulates that. For example, if you're like me and like a lot of pressure on your pubic bone, doggie style isn't going to accomplish that. See what I mean?