They’re kind of the same thing, really. Regretting something you did do is like regretting what could’ve been, had you not done the thing you regret having done, where as regretting something you didn’t do is like regretting what you could have now, had you done the thing you regret having not done.

Regret is p. much regret, all that really changes is the context in which it occurs. Log in to see images!