A is for Aftercare (The Alphabet of Desire #1)
Colette Davison

A is for Aftercare is the story of two men falling in love, while they explore their desires together, which include blindfolds, sensory play, and lots of cuddles. It's the first of three steamy, low angst novels, which follow each of the ABC triplets as they find love. You can read Blake and Corey's stories in B is for Beg and C is for Comfort.
An age-gap M/M romance.