Damn..I Need Help People..16 and In a Relationship?

I've been currently dating this one girl for about one month n some change now and i'm starting to get a little bored and feel a lil tied down..my relationships always get like this when it reaches this point. So i want to talk/mess with other females, or at least thats how i feel, but i don't wanna give my gf up either because i've NEVER ever met a girl like her before, and she knows how to treat her guh and everything...and she loves me to death. Sometimes it's a little scarey though..she's so protective..and jealous (i am too..jus neva had a gf like that)..and she tells me things like 'till death do us part..' which is like..wow..you know. This weekend i want to go up n stay with my ex..we're best friends but we also still have feelings for each other..tsk tsk..i know. My gf don't want me to go up there, but her not wantn me to go makes me want to go up there even more to show off my freedom in a way..ugh i dont know what to do. I DON'T want to be player..but i don't know..mayb i am