Hi Iceangel
Good luck in your search for a playmate for your fella - he sounds lovely. Dont rule out the bigger breeds though, there are some that are incredibly graceful and gentle (such as greyhounds/whippets/lurchers, although be careful not to pick one that's too "keen").
If you're really after a small breed, what about a chihuahua, or a French Bulldog? Also, there are loads of tiny dogs in rescue that are of mixed parentage that may be really great with your fella. If you're after a pedigree, try the breed rescues for the particular breed you're after - many have lived with other dogs, and you'd be giving a dog another chance of a happy and loving home.
Best of luck,
Kathy
xx