Bit annoyed by glasses girl. I understand where she is going to. She is trying to resolve the misunderstanding and place blame on the mc. Surely because mc has this close relationship with Ayaka, so the ex GF feel insecure and bla bla bla.
Listen your friend broke the trust. That's it. Is that simple. What you expect from mc? "Oh you don't fuck that guy, you just going out with him, what a loyal cutie!, Next time fuck him good, okeey?"
C'mon leave the man alone.