Responses

No. I am sure Taekyung loves him. I re-read twice, and since chapter 1 to get to understand. I don't think he is tricking him.
I think he changed when he noticed Hee seo had not murdered anyone.
is hard to say, but I think Taekyung has loved him all along. Since Heeseo ended up an orphan at 9 and then at 19 and now at 26
Taekyung love has changed and evolved from guardian to lover, but it has remained nonetheless.
it would be so much more reasonable for taekyung to be tricking him but at the same time im rooting for them like 0.001% i feel bad for heeseo sometimes