I've always answered these things by using each of the options, I don't use any of them twice, so I'll do that here too


Victor Krum - Hm, I guess he'd be the best to marry, no-one said you had to marry in this game for love anyway *lol*
Kreacher - Kiss - just on the cheek or something!
Nearly headless Nick - Be friends. I do feel a bit sorry for him, and I think he'd be a decent friend anyway



Next -
Peter Pettigrew, Sir Cadogan, Igor Karkaroff
Narcissa Malfoy, Prof. Trelawney, Cho Chang