When someone who was fridgid came out of their shell for a while and now they are fridgid again.
Often happens after a bad experience with alcohol.
Sometimes happens if your boy/girlfriend is a git and abused you so you never want anything to do with members of the opposite sex again.
Girl: *wakes up and sees boy led next to her* "eww I'm never drinking vodka again. Also I'm becoming a nun."
Boy: "Oh man, my ex was sweet. She helped me be more confident. Before she cheated on me.
Boy2: "Harsh. She refrigerated you."