As someone who's incredibly protective and uncomfortable with sharing any of my romantic f/os, I strongly think if you are being made to feel restricted and uncomfortable, it's best to stop being friends with them. I won't lie, it made me angry seeing your confession, and I think it should be made to be a more prominent boundary to not befriend people who are uncomfortable sharing your f/o. People are allowed to feel how they do in selfshipping, and unfortunately, there are a lot of people who don't feel comfortable sharing your f/o, and you can't hold that against them. With that being said, I don't wish to make this too lengthy, just wanted to air out my feelings.