Thirteen I was real mean

She's hurting and doing drugs. He's hurt and doing drugs. She's 13 and doesn't know what she's doing, he's 15 and know exactly what he's doing and he finds joy in it. She's hanging out with bad people, they both are. What happens when they meet and she catches feelings? How will he react when he founds out she's 13? Will he love her back? Will they help each other? Or bring each other down? She's on her last straw.