Better Late Than Never by L.A. Witt

Lieutenant Commander Connor Marks is starting over. His kids are grown up. His divorce is final. He’s settled into his new command and a beautiful house in Spain. Nothing left to do but move forward.
And maybe explore his bisexuality after all this time.
Unfortunately, his options are limited. He doesn’t speak enough Spanish to connect with the locals, and getting involved with other service members can get… complicated.
When HM1 Alex Barlow stumbles across a hot guy on a hookup app, of course it’s that gorgeous new physician Alex sees all the time at the hospital. Of course he’s looking to hook up with a guy. Of course he’s exactly Alex’s type.
The only problem is that Connor is an officer while Alex is enlisted. The fraternization regs are crystal clear—they can’t even be friends, never mind hook up.
Never mind be more than hookups.
But the Navy’s regs can’t cool the chemistry sizzling between Alex and Connor.
And nothing—not even their own stubbornness or Alex’s toxic, persistent ex—can stop them from falling in love.

CW: Discussion of past abuse, brief on-page violence; combat-related PTSD.