How do you convey yourself sexually? Are you dominant and completly comfortable with sex? Do you do any sexual inneundo?
Because I know girls who won't give head to one guy but would love to suck off the guy right next to him. It really comes down to being non-judgmental about sex and being an overall sexual guy.
Few questions though...
Do you talk dirty? (The famous "I wanna lick it" comes to mind)
Do you lead the sexual intereaction?
Are you dominant?
Do you take things slow and build it up? (I've now followed the rule of 30mins of making out before any sex happens)
This chick is most likely not 100% comfortable with sex or doesn't want to do it because she think you'll judge her. In more rare cases she just might now like giving head, but her not getting her **** licked? that's the first girl I've known who didn't want that.
It's funny because I know girls who would making you eat them out but won't kiss you, or girls who will make you fuk them up the ass but not in there puss. Never have I heard a chick not wanting somebody to eat her out.
Next time you have sex just go caveman and get caught up in all the emotions...
example
"OMG baby, your pusvy is looking so tasty, I wanna lick it, I'm going to make you *** for days" (Dive in for some dessert)