Rebound advice? Like as an example, can it be nevertheless probably be a rebound you had already known if it was with someone.

Rebound advice? Like as an example, can it be nevertheless probably be a rebound you had already known if it was with someone. So fundamentally my question is. can a rebound begin prior to the past relationship has ended? for the short while before the separation?Especially if perhaps you were getting near to this person [...]