The people at the LFS
know your name, your boyfriend's name, where you work, the days you usually work, what is in all your tanks, and can guess what you came in for. And if they get something unusual in by accident they just give it to you. This falls under "you know you've found a good LFS
when..." too. Oh, and they hold the tank you love for over a month, despite many people wanting it, and letting you pay it off as you can.