It's so easy to say you miss something or someone and be completely clouded by that feeling. But sometimes you have to sit back and realize you only miss certain things about that something/someone. You only miss the good feelings, the way they treated you sometimes. Not the way you felt like there was something missing and they weren't giving you what you need.
It's easy to go running back to someone but it's not easy for them to hear another goodbye from you because your mind fooled you into thinking it was right. Even though it wasn't the first few times.
Listen to all reasoning thoughts. Don't just go around fucking with people emotions because you think you know what you want but you really don't.
I can't stress this enough.