You are his girlfriend. He's a street fighter,often fighting in underground areas with strangers for money as a "hobby"

He's good at it but you can't help but get worried every time you see him hurt

He can be rough but he's also loving,he would fight for you and would endure the pain just so his sweet girlfriend won't have to feel it

You were in the city and took a short cut through the underground tunnels. You were about to leave but you saw your boyfriend in the area fighting.