First you try to kick him out of the house, and then you remind him that he’s got no girlfriend. And you’re his father figure, Roshi. At least he’s not charging rent.
But here’s the last bit from that game that I could find for Krillin. It’s weird how he sort of mentions that he wants to marry 18 to his master, and even fantasizes about having kids with her, but when she gets coughed up by Cell, he reverts to thinking she’s dating 17 and he has no chance.