How would you interpret it if a guy treated you well but then decided to cut it off?

[Anonymous]

if say a guy was really nice to you and never tried to hurt your feelings. Like made sure he paid for dinners and always checked to make sure you were doing ok. But then decided to not engage in communication with you after he called you to make sure you got home. He also said that he wasn’t really sure about meeting up and that his thoughts might change in a few weeks because he’s unstable. I didn’t really get it. I thought maybe he’s trying to get together with another girl but he denied it when I had asked. The reason I’m surprised is he was really nice and so didn’t really make sense for him to shy away from meeting up again. Do I just lose his number?

[Guy13]

Maybe he discovered something to great to overcome. maybe he is bipolar and it is his way of communicating mood disorder.