I asked a boy if he liked his fiancee. What did he mean when he said I wouldn't like anyone?

Only you are happy to answer your questions.

Several possibilities:

1. I was in a bad mood and didn't want to discuss this issue, so I casually said.

He was hurt by his feelings, and he felt that he would never trust and love others again.

His relationship with his fiancee is relatively hidden, such as forced arrangement by both parents, so it is very sensitive to mention this issue.

He is withdrawn, slow or cold, lives in his own world and is not interested in others.

He saw through your intentions or thought you liked him, so he turned you down directly.

Personal opinions are for reference only. Please accept them if you are satisfied and ask questions if necessary. Thank you for your support ~