I’m Into You by Kris Sawyer

When a nineteen-year-old college kid falls for a forty-year-old man who happens to be his best friend’s dad, trouble has already invited itself.
Neil has been friends with Sean since his first day at college. Even though Sean has always expressed more than a sexual interest in him, Neil just couldn’t get himself to reciprocate those feelings. Sean isn’t giving up just yet. To spend more time with Neil, he talks him into joining the gym that his dad owns in the city.

When Alec realizes his son has fallen for a guy, he decides to take the matter into his own hands and play Cupid in his love story. However, he doesn’t expect Sean’s crush to be so cute and attractive. Pushing his personal feelings to one side, he decides to be Neil’s trainer only to find the sexual tension between them rising day by day.
Will Alec and Neil find it in themselves to move on for the sake of the one person they care the most? Or will they be overpowered by their lust for each other, making them lose control?