Heejae’s feelings

So after the Heejae flashback, I’m wondering how much Heejae really likes Seyeong even now. I know he originally does it for revenge and then truly (?) grows to like Seyeong, but he still recently talks about how he has to hold his true feelings in and how Seyeong “is so fucked”. So is it still revenge or is he obsessively in love now? Kinda confused