These are the book, probably most of them found on my GR recommended reads, because I never heard of them before, and maybe neither have you
Bound and Determined by Jane Davitt
First Published 20th of October 2009 by Loose ID
When Sterling Baker discovers the wonderful world of BDSM, he's ready to literally throw himself at the feet of the spectacular Owen Sawyer, but Owen is unwilling to take on someone so new to the scene—or so he says. Determined to get what he wants, Sterling sets out to convince the doubting Owen that he can be the best sub in the world, the fastest learning, the most obedient.
It's not as easy as he thinks it will be, and things get even more complicated when Sterling realizes that he's fallen in love with Owen. With the stakes that much higher, Sterling's more determined than ever to win Owen over. But now he'll have to convince Owen they can have more than a teacher / student relationship, more than just good kink.