Backpeddling

Trying to take back something said or done, usally done by altering it or changing it, in an attempt to change a viewpoint or to save face. The term backpeddling refer to the motion someone does on a bike to use a brake, moving the legs in another direction, sometimes going nowhere.

Someone who says something and takes it back.

A lover who doesn't get anywhere in a relationship.

And idiot ex-boyfriend.

Reversing forward movement throughout time.