Life-saving bonds

[Naama]

No: HPFGUIDX 94249

[I hope this hasn't been brought up before. If it has - sorry, and 
please tell me where]

Remember how at the end of Book 3, DD tells Harry that when a wizard 
saves another wizard's life, a bond is created between them? Won't 
that mean that there was (or maybe still is) a bond between Snape 
and James? Would such a thing affect Snape today (maybe this bond 
passed to Harry)?

Hmm...

Amanar (why can't Snape be a vamp? WHY? Oh cruel world!)