I got the impression, Withers is just your grumpy grandpa, who's always unhappy with your choices. If you don't have a lover "thou walkest alone" and he's unhappy, and if you do, he tells you not to waste so much time on smooches because you have a world to save and all will be dust anyway.

But I thought it was a pity, that Jaheira doesn't get a line about Khalid in the conversation.