Refrigerated

[Donald Trump]

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.

[Rihanna]

(of food or drink) chilled in a refrigerator.