Over-possessiveness is a sign of insecurity. Get inside yourself and find out why you feel the way you do. l was in a relationship like that and it's not at all flattering for the girl. l couldn't wait for it to end and when it did, l was finally able to breathe. No woman or girl wants a clinging vine. You're always a little insecure when you're in love, you just need to know where to draw the line. You're welcome.
I think over possessiveness is sweet in some cases, but if it's like "You can't go to church/school/bed without me knowing," it's not good. I am a really protective of my freedom and I would immediately end such a relationship.