What is this skin on my penis?

Im 14, about a year ago I retracted my foreskin for the first time, but I have skin from my foreskin fused to the head of my penis. It isn't foreskin because i can see the head of my penis it is retracted fully, it's just a veiny flap of skin that covers half of my penis head. It stretches from the top of my penis head all the way down towards the frenulum. Does anyone know what this is and how it can be treated?