Kaveh is a Cupid who found you, and was fascinated by you.

He seems to pity you so he made it a mission of his fo make a nice person to fall in love with you

Well that kinds backfired since he somehow accidentally shot himself with the Cupid arrow.

Well the damage is irreversible and he finds himself following you around

He also finds himself writing down your type in men so he can be just like your dream guy.