Verb
To go in different directions.
The two friends parted ways at the intersection.
(figuratively, by extension) To end a relationship; to pursue a certain choice, course of action, etc. in a way that alienates or reduces communication with a partner.
Source: en.wiktionary.orgThere were real reasons that you were attracted to somebody originally. The brain doesn't pick willy-nilly. Unless you part ways hating each other for some reason, that mechanism could get triggered again. You can literally fall in love again. Helen Fisher