I found your experience quite interesting, a few months ago, I was in a rather similar boat as yourself.
I personally was raised in a christian home, my mom is a preacher's kid. So you can just imagine the values I was raised with. However, I am currently, sleeping with my b/f also. My point is sometimes what you are raised by isn't always how you feel. I was constantly told never to have sex before married, but look at me now. I have to admit that the first time was difficult. So many thoughts of "this is wrong" and "I shouldn't be doing this" flooded my mind. It really comes down to rather or not you are comfortable with what you are doing. If you are, then there isn't anything wrong with it.
As far as it being the first time that your g/f has orgasm, well, after being with a bunch of different guys, personnally it wasn't until my recent b/f that I received my first explosion. Hence, why I will never give him up
And lastly about your experience issue. I've had my share of fun, and low and behold, my b/f hasn't. A few months ago we went through a very rough time. You see, he saw my best friend and thought of her as attractive. He had a hard time dealing with the concept of whether or not his attractiveness to my best friend was a sign that he wasn't ready to be with me. He also went through the "I want to experience things for my own" stage. I would mention things that I have done, and would see a longing in his eyes because he hadn't. However, he excepted the fact that he truely wants to be with me, and therefore the subject was closed.
My advice on that subject would be this. If you are wanting to try things out, I would sit your g/f down and explan it to her. That's what my b/f did with me. I did not take it very well at first, but at the first "what the hell" moment, I understood how he felt. In case you are wondering, we are currently having our 11 months today, so as you can see it worked out in the end, and I'm glad he told me how he felt.
I hope this helps!