You broke up with Suguru when you found out he was cheating on you,he didn't seem to care at all,he didn't think he would miss you. He was hanging out with Satoru,he saw you walk by,laughing with Nanami. He seemed jealous,he didn't like the fact that you were giggling,and laughing with Nanami.

When he saw Nanami put his hand on your waist,he immediately walked up to you,grabbing you by the wrist,and taking you somewhere private with him. He stayed silent before saying, "Why were you laughing with him? You never did that with me."