Baby Maker by M.L. Broome

Calliope:

I believe in love. Or I did until my husband died.
Now, I believe in surviving this world without him.
I have a plan mapped out for the rest of my life, and it doesn’t involve a man. I’ve been down that road and I’m not willing to risk my heart again.
Not even for the devastatingly handsome and charming Dr. Keegan Russo, who also happens to be one hell of a kisser.
My head has plans, but what happens when my heart can’t say no?

Keegan:

Hot as hell sex with no strings attached. That’s my credo.
It works, too, until she walks into my office.
Calliope. A young widow with totally different priorities than me.
There’s no future for us, but I can’t stay away, either.
For the first time, I want something complicated and messy, and I want it with her.
But that means breaking the promise I made her on the day we met.