come back when you can stay longer
A phrase directed at a guest who is welcome to extend their visit next time. Well, I'm glad we got to see each other, even if it wasn't for very long. Come back when you can stay longer!
Come back when you can stay longer.
Come back again sometime when your visit can be longer. (Often said by a host or hostess to departing guests.) John: I really must go. Sue: So glad you could come. Please come back when you can stay longer. Bill: Well, I hate to eat and run, but I have to get up early tomorrow. Mary: Well, come back when you can stay longer.