I have two questions. First is that I do not ejaculate when my girlfriend is performing oral sex on me. Is there something I can do or something she can do different? Second, is my girlfriend will have the signs of an orgasim but then suddenly is not horny anymore. She says she is not orgasiming or anything, can I do anything different to complete the pleasure? Thanks
First - you should know that ejaculation and orgasm are different things. Even though you do not ejaculate during oral sex - you should still be having an orgasm.
That being said - do you know that your girl likes to swallow? If not - you might have the best of both worlds this way. ( And if you have more than one sexual partner - no ejaculation reduces the chance of you passing on an STD.)
If she does - and you feel like you are missing something by not ejaculating or not ejaculating in her mouth - then you can finish yourself- and then tell her when you are about to ejaculate so she can get her mouth on you in time.
As for her - one of two things is probably going on. The sensations she is feeling are so good and extreme that she can't take it any more and she just stops feeling anything. If that happens - you need to learn to change what you are doing every few minutes. Change the direction - the speed - stop for a second - the location. You are overwhelming her with the same sensation in the same place and even if it feels good it is just too much of a good thing.
The other possibility is that when she is close to orgasm she anticipates the difference in sensation and the sensations are too strong and come to close to feeling painful and she huts down. If that is happening - you need to stop - just for a second and then continue on.