Dev Girl by Allyson Lindt

Alys
Love and sex? Not the same thing. I made that mistake once. I loved him. He screwed around behind my back.
Lesson learned.
Fortunately, my current friends are the best in the universe, including sexy-sweet Maddox, who always knows the right thing to say and do, and my on-again, off-again friend-with-benefits, Onyx, who knows me better than anyone.
When the three of us cross a few lines, we know it doesn’t mean more. Despite the scorching nights and only one bed between the three of us, I won’t fall again. Not like last time.

Especially when I find out Onyx is keeping a secret that could destroy our friendship forever. Good thing I wasn’t ready to give him my heart.
Oh no.