But "do something stupid/dangerous to show how brave you are" is part of human nature.
Buy/rent a small lake, turn it blue/pink/multi color, sell tickets to Instagrammers.
Looks like there are some romantic AirBnB get-aways available near Love Canal:
Also quite a few in Chernobyl with glowing reviews:
Don't go into the reactor sarcophagus, don't eat the soil at Love Canal, and you'll be fine for a romantic weekend.
Also, it's a very interesting place to visit. Can recommend; been there in 2017.