The crazy thing about being in loving some one who doesn't love you back. Like an idiot you wait. then you see they moved on then decide to so the same but it ruins your current relationship. The person loves you but you don't love them back the guilty conscience eats at your soul.
That person is controlling and draining realizing its better probably easier to be single. Everything feels forced and never natural. Once you give maximum effort to make it work but being ruined all the demands are never good enough.
Once you are single you ask who you are and what do you want. Learn to do things by yourself. Thinking for one is hard enough but thinking for two extremely stressful.