Plot twist! It was Selvess. He was probably trying to curse his rival, Eddy's wife, not realising that it was " Suzette" . Of course, this is all speculation.
I don't get why people are criticising the two characters so much.
Misunderstandings, dumb thoughts, frustrations at oneself that build up, stuff like that does happen, and they resolved it pretty well.
I think this manga is cute.