I can play Boy A, or Boy B in the following idea. I only write in third person. I much prefer to use PM. My average post is two to three paragraphs. All characters are 16+.
FOSTER MOM (m/m m/f)---Boy A moves in with a new foster mom and soon learns her only reason for taking in teenage boys is to have some penis to play with when the need arises. She feeds and gives him shelter, but as for things such as new clothes he is on his own. Her solution was that he should find a daddy to take care of him.
Boy B lives with his mom. Her current boyfriend seems more interested in him than her. His general rule for men is if they're not paying he isn't playing. While Boy A has never been with a man Boy B has dabbled with perverts from time-to-time when he needed money in his pocket.
The boys meet on the street and become friends. Boy B introduces Boy A to prostitution. We would both play various other characters that pop up and there would be a numbers of NPCs.