Thank you guys, I feel like I have such a sweet little pup on my hands (whom is still without a name!)
Teddy came home with my friend, and when he came into the house, she was crying. He ran up to her exercise pen and put his head as close as possible to hers. His little tail was wagging, and he kept circling the pen and looking at her. At one point he got very close, and she stuck her paw through the pen at him and he growled and jumped back. I think he was a little scared. I took her out for a few minutes and held her, and just let him come over to sniff her. He was very gentle, and would walk far away, and then come back. I put her in the pen for a few more, and he calmed down and bit. Finally (while keeping a close eye on them) I let her out. She followed him around like a little tadpole, it was very sweet. She crouched down and ran around trying to play with him. He started running around to play as well. I kept calming him down a bit because she is soooooo small! All in all, I think it was good!
She is sleeping in the pen now, and he is on the couch next to my boyfriend. I'm going to sleep in the guest room (with her and Teddy) in case she cries too much. I think today was a great day, and I can't wait for tomorrow