* Wonder Woman and Batman aren't romantically involved: While they have a strong friendship and respect for each other, they are not a couple.
* Wonder Woman is not known to have cheated on any romantic partner: Wonder Woman is a strong, independent character who is fiercely loyal to her loved ones. She is not known to engage in infidelity.
It is possible that you may be referring to a fan-made story or fanfiction where this scenario takes place. However, it is not a part of the official DC Comics canon.
If you could provide more context or details about the specific story you are referring to, I might be able to help you further.