True Sunhwa stay with nanjo despite borefest on bed because other aspect like he's generous, hot & handsome, being ice cold tho other and only kind to Sunhwa, probably worshiping Sunhwa
But Sunhwa wasn't fully committed relationship to nanjo, he still having sex with other behind his back even invited another person to do threesome and dare to walk away when he found out that nanjo doing both toping and bottoming

Kinda suck to be Sunhwa you get yourself royal and good sugar daddy then got screwed by none other than your 10 years of bestfriend but he only himself to blame since he is the one who's invited the third person
But good for him, he's not settle for good money without good sex