UPDATED with answers to questions: New er spaniel- loves my girlfriend but could care less about me.?

Get treats for the puppy. You call him and give him a little doggie bone. She shouldn't give him any treats or food. The puppy is used to women. My ex got a dog like that. She just loves women, but isn't very sure about men. Sophie is 2 yrs old now and still prefers women. She isn't as man-shy as she used to be. It will just take time. When it comes time to walk the dog, you do it, dogs love to go for walks and the dog will like you because you take him out. Good luck.