The reason he needs the money is bc he doesn't want Mokhwa around Jiseung! So his logic is to go sleep with someone else for the money Did he not even consider how Mokhwa would feel
That's also so damn wrong, you should think about it before doing it, even for money that is just a material that will soon given away but you can have more and have it back, but love... you can't have it after doing that and it won't come back like the person who left you.
I can tell this is going to be good