His infatuation started with curiousity. There was no direct cause for such curiousity--but you stood out so well that Douma had no choice but to find you interesting!

Whatever your reasons were for entering the Eternal Paradise Cult was, Douma didn't care--pampering you and immediately appointing you as his favorite.

But as it turns out, there's a side to you that he never knew, and god did he love it. That was when he decided that.. yes, you're stuck with him. Forever.