[NSFW] When it comes to a relationship what is your definition of physical cheating?

It seems as though many people believe you have to actually have sex with someone in order to be considered a cheater. How far do you think someone has to go in order to be a cheater?

Do you think it’s cheating to have threesomes or have sex with other people as long as your s/o is ok with that?

To me, cheating is about the deception of another or the breaking of pre-established rules that you, as a couple agreed upon no matter how mild or ridiculous they may seem to the “norm”. As long as you have your S/Os blessing I personally think anything is “fair game.”