1.[QUOTE=avidsensei]hi, i am retilitively new to sex. I tried letting my girl get on top and she went crazy and loved it. the only problem was that i kept poping out. wich way should i angle myself to make it the easist for her to ride me? or what other suggestions do you have.

2.also, my girlfriend doesnt get off from clitoral stimulation, but will shake and spasm after thrusting for awhile in an upward motion. am i extremely lucky or is this strange?[/QUOTE]

1."Popping out" is common and will, I think, resolve with practice, practice, PRACTICE :D

2. Sounds like you're hitting the G-spot, boyo! Go with it!

Keep the communication going and open. Both of you listen to your own bodies and to each others.

[QUOTE=avidsensei]any other suggestions? or tips?[/QUOTE]

Have her shorten the length of her stroke.
Have her stroke or thrust with less vigor, albeit with the same enthusiasm.
Have her do more "grinding" or undulating against you in order to stimulate her clitoris and environs while resting upon you.

[QUOTE=avidsensei]hi, i am retilitively new to sex. I tried letting my girl get on top and she went crazy and loved it. the only problem was that i kept poping out. wich way should i angle myself to make it the easist for her to ride me? or what other suggestions do you have.

also, my girlfriend doesnt get off from clitoral stimulation, but will shake and spasm after thrusting for awhile in an upward motion. am i extremely lucky or is this strange?[/QUOTE]

Who the hell cares? Just have fun!