Eunho hasn't lied once! Hyung has been lying since the beginning.
Eunho is lying to himself now because he doesn't want to be friends with benefits, he wants more than that...
He knows.. but also knows he can't get him back right now
He said lets be friend with benefits. He never said that he wanted it that way. Eunho is just desperate. Eunho is still true to himself but he know that jaeha is scared of the being in a serious relationship but unfortunately Eunho seems to believe he need jaeha in his life no matter the what.
They are both lying to themselves. Even after 2 years, they are still MADLY IN LOVE with each other. This friends with benefits isn't going to last long. Just adding sex with no feelings is like adding gasoline to a forest fire. It's going to get even more out of control