At this point, I'd be totally fine if they did NOT end up together (probably won't happen tho). I'd be very happy if the MC can reach success and run from Sekye. He deserves better tbh.
I get wanting to be with someone who gives you a semblance of warmth and makes you feel special in a way when the world seems to be against you... it's just sad and unfortunate that the person who makes our MC feel that way with is Sekye who is seeing him as a substitute and taking advantage of him.
Be happy MC. And run if you can.