Right now, I figured Sangmin would get snarky with him about his 'latest conquests'. Maybe one of his friends or something got involved and was hurt. He would also do it because he's a little jealous or maybe had a bit of a crush on the girl at the time. just some drama inserted. Also maybe because he thinks Haejung is cute and he doesn't want Tae sweeping in at the moment.

Though, I don't think Haejung and Sangmin are really cut out for each other. I know who I want him to end up with eventually, but it is a (not so well masked) secret.

Also, you never really know where things will go in the long run. I like that about RPing with other people. Maybe a nice wrench gets thrown into the works. it is always fun to have my plans crushed into tiny little bits.