Originally Posted by
Forsaken Lover
He's your best friend. That's his character. I don't know why people get on his case for this. Sure you can say Junpei is your friend too and Michelle and Ryuji but they are still just "a friend." There is absolutely nothing that makes Junpei, Ryuji or Eikichi closer to you than any of the others. Yosuke is the first person whose darkest secrets you see and then help him through it. For the rest of the game he is your partner in everything and will be the first person to cheer you on or support you. There are a lot of little things, like the fact he will call you up to ask for your help at the store. (and then pay you) His final Social Link scene is you and him having a friendly fist fight and celebrating your youthful manliness.
There was a YT comment on a Yosuke S Link video that commented about how Yosuke has better chemistry with the MC than the MC does with the actual girls. That's pretty much why people love him. It's why I love him.