Sometimes, at a gathering, I meet and get drawn into wonderful conversation with a beautiful, kind, friendly woman who I eventually find out is married to a surly, unpleasant man at the other side of the room. So I travel back in time to meet her before she gets married.
More often than not, in the past, she turns out to be a very different person than she is in the present. She is still beautiful, but not kind or friendly, and she shows no interest in me in the past.
Alternatively, in the past we become friends, get married and live until the present, where I turn out to be the surly, unpleasant man at the other side of the room, because my beautiful, kind, friendly wife is always talking to weirdos who stand staring at her as though they’re traveling through time.