I should have expected that my general attack on protestant Christianity's views on sex would get a sarcastic response.

And no, possessiveness in regards to other humans is honestly really bad. It may every so often feel good for a moment, in a 'they want me' sort of feel. But that has a really bad tendency to go off the rails and turn violent quickly.

There's ways to do sexuality and relationships healthy. Possessiveness, jealousy, shame, and other similar emotions aren't healthy for anyone involved.