Responses
I don't think he actually wants to "get" with him. The way I see it is that Siwoon is the only one who saw him and his brother as equals instead of him being the "inferior" twin. For that reason he desperately wants to be his friend. He needs someone to see him as an individual instead of Siwon's twin.
Umm...Is Jiwook gay or something? Why does he want to get together with Siwoon? OMG be with the evil bastard then, leave the two cinnabons alone. (/TДT)/