I guess we can figure out who cheated on who. I have no idea what that is worth but my guess is she is selling it for less than value just to make it go away.
if you are on a budget and want to keep your girl happy, this may be the ring for you. I would suggest maybe sending your mom to pick it up. Jennifer sounds like she may still be a bit bitter about the whole Satan cheating on her thing and odds are will try and talk you or your girl out of a relationship.
Hang in there Jennifer.
You look like a good looking girl, there will be a new Satan to come along anytime time now.