So my girlfriend and I have been dating for about 5 months now. She made it clear from the beginning that she wanted to wait until we were closer to being "permanent" before we did anything sexual. I was fine with that and still am because I love her. The problem is that most of the time when we are making out or getting physical she will start grinding on me and will eventually bring herself to orgasm pretty much every time. This is all well and good for her but it leaves me pretty unsatisfied.
There is part of me that thinks this shouldn't matter but then the other half gets a bit jealous when she is able to finish (basically from dry humping fully clothed) and I'm left all hot and bothered afterwards when she just wants to snuggle.
Any advice?