Claims she's never orgasmed before
	
	
		A girl that I've become romantically/sexually involved in recently says she has never had an orgasm before (including masturbation).  In effort to be her first, I've experienced the reaction myself.  Rather than climaxing, her body seems to tighten up as it becomes more intense (as if she is about to orgasm), and then all of a sudden, as she's explained it, she "can't take it anymore" and one way or another scampers out of it.  I know she's emotionally attracted to me and visually it's very obvious how much she enjoys it.  Is there anything I can try to maybe break through this barrier?