Ewwwwwwwwww

Sera honey, he's not worth it. Leave him. If you knew he was jerking off while thinking about someone else f*cking, you'd puke. Not to mention that someone is junyoung. It's not junyoung you should keep in check, but that trash that you're interested.
But if she's the type who can keep him on a leash, like his mom did then it's alright. He has a good looking face and you're satisfied on bed then it's all good. In the first place, she doesn't seem interested in getting his love.