Gunz, you are 15, I know it feels like she is the one but you are going to have to break it off and get on with life. It's obvious you are not going to stay with you forever, so why have her hold you back? This is a learning experience for you.
So slap that ho to the curb and step on her throat. Or jerk off in her eye.
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"the bus came by and I got on, that's when it all began...there was Cowboy Neal at the wheel of a bus to never-ever land."