My wife grew up in a strict catholic home. I was her second lover. Took her awhile to become comfortable with oral sex. Now, she loves it. Although, every so often, she get's a little embarrassed/shy about spreading. Damn catholic guilt
Had one girlfriend that had the most amazing orgasm while I was giving her oral the first time (first or second time we were together). Found out later that night, it was her FIRST orgasm. Ever. After that, she wanted my face between her legs every chance she got. The best was that she loved to give head, too. She couldn't get enuf!!