Does he love receiving oral sex but is a bit shy or turned-off by returning the favor? Tell him he doesn't know what he's missing and suggest you try a few things together to enhance what may become one of his favorite sexual activities. Obviously, be spanking clean (no pun intended) and invite him into the shower to help. If his misgivings about oral sex are that he's afraid to end up with a mouthful of hair, a shaving experiment is in order.
Even if your guy loves pleasuring you, he'd still love to get a good look at the object of his desire. Use a moisturizing shaving gel and be sure to use moisturizing lotion afterwards. You can either go for the bald look or perhaps get creative and shave the area into a triangle or anything your imagination comes up with. The shower is probably the best place to shave, but you can also lie in bed on a towel while he (carefully) experiments with a razor, lots of shaving goop and a small tub of warm water for rinsing.
Is it your natural taste your guy may not have acquired a fondness for? Women do tend to taste differently at different times of the month and after having a baby and probably all things hormonal. But you can make sure you taste yummy with any number of flavoured lubricants, lotions or potions available at your local adult toy store. If you have a 'Pleasure Chest' where you live, you've probably already tried your hand at this -- and a lot of other fun things. So in this day of thirty-one or more flavours meant to sweeten the pot, taste is no longer a problem.
As you know, there's always whipped cream and chocolate sauce or marshmallow sauce, etc. But I can't stress this point strongly enough: NEVER, NEVER use the microwave to warm anything that will end up anywhere near his delicates. The microwave warms unevenly and you may miss a hot spot that will take him out of the game for weeks -- and you out of the picture forever. This is not an urban legend of some sort; I know someone who lost their boyfriend by nuking ice cream for only 15 seconds, about 5 seconds too long.