When the Love Act passed me and my cousin were still quite young so our parents didn't really explain it to us. We were thick as thieves, me and my cousin. Playing together in our treehouse, reading comics, etc. I remember that I loved hanging out with her so much I made a promise that someday I'd marry her so we could play together every day. A stupid thing to say when you're young I know. But now here we are, me and my cousin. Grown up and having "needs". 

I wiggle her ass in my hands as my erection grows, eventually touching her pussy. I remove all doubt from my mind as I ask her "Hey, remember the time I promised to marry you so we could play together every day? Well I didn't know what that really meant then........but I do now. So......do you wanna get married so we could play together every day?" She laughed and smirked at my proposal and joke. 

"Yes, I do." She timidly said. 

Our lips met as she can feel my heartbeat through my erection on her pussy.