I'm trying to find a specific story. Jensen is in high school and his boyfriend breaks up with him shortly after he finds out he's pregnant. Jensen's miserable and tries to hide that he's pregnant, but everyone knows and is talking about him/making fun of him. He really isn't taking care of himself - I think his mom tries to make him eat at one point because he hasn't been. Jared is his younger neighbor and he feels bad when he sees how Jensen is being treated at school, so he reaches out and they become closer throughout the pregnancy.

Edit: Found in comments