Why are you making someone your everything when they are only making you an option. It's a waste of everyone's time.
They're afraid to "lose you". But are they? If they were wouldn't they be pursuing you right now? Yes. They are afraid of losing the back up option. If you're not a priority why would you stick around. You're investing yourself in something that doesn't really matter to the other person. Be a priority, you deserve unconditional love.