OMG. I e-mailed the seller again this morning and received this...
"No he riped u off, he wasn't going to look for u in the first place. I'm no longer with him anymore but here is his number xxxxxxxxx u can text him. The sewing machine wasn't his in the first place, its his moms and he sold it to u when she was in the hospital. Please don't email me anymore. Thanks."
So, the seller stole it from his mother and sold it to me. I'm so sad for his mother. And this guy was very nice to me, shook my hand, told me if I had any problems with it to contact him. etc. etc. This is a big lesson learned for me about how disgusting people are!
I e-mailed the girlfriend back and told her I wouldn't be contacting her again. But, that if the mother wants her machine back she can e-mail me about it. Just terrible...