Ever been in a relationship with someone you had no idea where it was going?

Have you ever been in a relationship where you didn’t really know where it was going? I guess technically no one really does know the future, but have you ever been in one that was so complicated? For example already discussing and realizing that it would be best to just enjoy each other’s time and company, and worry about the future later? Is there a point to being with someone you knew you couldn’t have a long term relationship with? Like if you enjoy their company bit realistically knew that a long term relationship was out of reach? Do you enjoy the ride and the journey with the person because you love them, or save yourself possible heartache by cutting it off slow? At one point did you know whether to go on or not?