Some women dislike providing oral sex , but many enjoy it. "Lots of women derive pleasure from feeling a lover's erection in their mouths," says Fair Oaks, California, sex therapist Louanne Weston.
http://www.psychologytoday.com/blog/all-about-sex/201307/secrets-fabulous-fellatio
http://www.psychologytoday.com/blog/all-about-sex/201307/secrets-fabulous-fellatio