Your hero/heroine is recovering from the tragic loss of their spouse/partner. To help them start life again, they take off on a trip around the globe, going to all the places that feel wild, free, and speak to their heart. During their travels they run into a long lost love, one that felt too dangerous or risky to stay with. Now, with a new life blooming, this romance may have the perfect opportunity. 

Why did the long lost love feel too dangerous or risky? Was it a same sex relationship where your hero/heroine didn’t feel safe coming out of the closet or was the person themselves a bit too wild and unpredictable?

Where do they reunite? What does this reunion look like? What happens?

This could be an erotic romance for sure. It could also be contemporary or with some creative worldbuilding you could turn it into a fantasy/sci-fi.