For stealing someone else's love that's called being a jerk ╮( ̄▽ ̄)╭ Ray
How is Iwata stealing someone else's love when Soudai is not even in love with Haru?? #-.-) Sure @mischiefgrrl might have stated the word 'steal' when the truth is that there are no facts from the manga that Soudai is in love with Haru. So no, Iwata is not jerk but Soudai is. There is nothing wrong with Iwata inviting Haru out. But of course we have to wait for further updates to see how this goes.
Steal him Iwata! Soudai is an endless jerk. Steal Haru, quick!