Wrong Choice

Haru Nanase and Rin Matsuoka are in a relationship but Haru isn't happy about that anymore. Why he was that stupid to reject Makoto two months ago? Haru doesn't know it anymore and one day he leaves Rin. He wants to be alone for a while to think about some things. While he's doing that , he meets Nagisa and Rei again. Those two are in a wonderful relationship. Would Haru have that too with Makoto or has he to go back to Rin?