How long do casual relationships usually last? Casual relationships usually last anywhere from a few weeks to about three months. It is often that at about three months time you will usually know where you want to go in the relationship from there.

Can casual relationships be healthy?

A casual relationship can also be healthy if you take the necessary steps towards keeping the lines of dialogue open. In fact, sometimes its better for a relationship to be casual as long as youre communicating. Casual relationships might not work when both parties are on different pages.