That is how my friend got her ASL male. She lost her last one due to bloat. When she went to help someone out with their shepherds, Nick immediately bonded and so did she. I don't mean just got along. I mean...
Nick is a very calm dog. He's ok with getting love from people but generally doesn't care one way or the other. He was already 4 when she met him. Even his owner didn't have that strong of a relationship with him. But when they saw each other the first time, Nick RAN full-speed to her, tail wagging all over the place. He is always with her, and is truly her shadow.
When the owner saw the reaction, she decided that Nick would be perfect for her. She gave him to her to help her mend her heart, and because they were meant for each other. (:
Personally, however, I would NEVER give my dog up just because someone else liked them/bonded to them. I would refer them to my breeder or other good breeders I know of. But they would not be getting MY baby.
Mom To~ Dakoda (b/t GSD), Acheron (black GSD)