Nic its nice you've got so many people interested, it means you can see how he is with them, and choose whos best!! Atleast then you know he'll like them!
Awww Loch, it is upsetting! I had to give my dog to my mum a few years ago because I just wasnt cut out for dog ownership, then my mum had enough because she was just so energetic, so now she lives with OH's mum, and it was so sad having to take and leave her there, every time for months I saw her she'd try to come home with me, it was heart breaking and I always had a little cry. Wish i'd given her to a stranger now, so I could've got over it, it still makes me feel guilty every time I see her...