
I'm confused as to since when Wooju is fine doing that with him aside from the "practicing" did he just fell for him in S2 just like that?

I think Wooju always liked Jiheon but not the same way as Jiheon. He treats him almost as if they were in a relationship and forgives him to aesily.
The whole "practice" is odd, i mean he couldn’t have s3x with his exbf but did it with Jiheon many times, then after he was rejected by a girl that resembles Jiheon and the "practice" ends he feels disappointed and keeps having sex with Jiheon.
Ahhhhhhh so cute