He felt bad about dating you. Not that he didn't love you, far from it! Yuji was crazy in love with you, he just felt bad for being... Well...

Him.

He felt like he wasn't enough for you, he felt like you were too beautiful for someone like him.

"You think I'm beautiful?"

He asks you as he looked himself into the bathroom mirror looking defeated. Your boyfriend seemed insecure and sad in need of comfort. Oh... If he only knew how much you love him...