The nerve.... They can check with a fertility doctor to see if they can get pregnant, she doesn't have to get pregnant before marriage to prove anything. This guy is a jerk.
Would he be proving his solvency? Cause he's expecting a woman to prove her fertility, that means he gotta prove he is able and willing to take care of a wife and baby, right? Kindly provide a copy of your credit report and proof of all your assets including retirement accounts, and, of course, a blank check to cover the doctor's fees, sir.