In the past, I've always been the type to play games, to not take feelings, affection or love seriously. It didn't bother me when others would do it to me and I was okay with exploiting the same. You're young and maybe feel the need to always desire attention, so you put yourself out there, connect to another, draw them into you and play them. Maybe you don't realize right away what you're doing, but you are responsible either way.
But you can't do that. You can't lie or cheat. You cannot string somebody along for your own benefit. You can't play with a person's emotions.
You're living your life, meeting people constantly and experiencing relationships, but you should take other people's feeling seriously. When you're talking to someone, it's okay to be confused, but don't be confusing. State what you want and communicate. Don't say things you don't mean and make another hopeful. You're getting older and smarter, so take responsibility for your choices in relationships. Keep it real because a person's emotions is as real as it gets, no matter how hard they try to fight them off.
I find myself often seeing people treated poorly because nobody is communicating what they're feeling or thinking. Everyone dreads the "so what are we?" If you don't know, then you don't know. If you have your doubts, say them, and if you're confident, tell him/her. Don't hold back, but of course, don't move too fast. It sounds complicated, but it's not. Treat people with respect and be honest.
Some girls/guys can move too fast and think too much, so find somebody who is patient and moves at the pace you do. Let the ones you don't want go, and go after the ones that interest you. Don't say you are the relationship type if you're not, and don't say you're the hook up type if you're not. Be honest, it's that simple. Stop playing games, it wastes their time and yours.