Why can't he get me there?

If this guy really like’s you back than he would want to be pleasuring you the way he is pleasured. Often times women aren’t directly stimulated by sex itself. The male orgasm spot is being targeted during sex but the women’s spot(the clitoris) is no where close.

Talk to your guy and ask if you can try different things. You can play around more during foreplay or change up the positions to see what feels best. He probably wouldn’t mind exploring different ways of having sex. Most importantly, be comfortable with him. If yu love him and he loves you than any constructive critiscm would be greatly appreciated. Try not to come off negative or demeaning but rather suggestive and curious. If he sees that your suggesting rather than demanding than he would feel better about pleasing you.

Lastly, don’t be shy. Some guys are great at pleasing women because they have been taught by a woman. Guys don’t just hit puberty and are experts at making women orgasm, they have to be taught. Make that your personal duty to teach him what turns you on and gets you off.