Definition of cheating?

How do some of you understand the term 'cheating' within the context of a committed relationship? Where do you stand with things such as porn, clubs, male/female friends depending on sexual preference, physical contact etc? Ty to all who reply in advance.

To me, cheating would mean being intimate with someone else.

It's possible to have platonic friendships with the opposite sex in some cases.
I personally don't like porn, it's not a part of my relationships.
Not sure what you mean about clubs.

When someone is emotionally or physically invested in another person and feel that they have to keep that from their partner.

Porn, strip clubs, etc do not fall under my definition of cheating.

I am polyamourous so I believe we can care for more than one person, but it must be done with the full consent and understanding of all involved. No hiding, no deception.

Any physical contact/pursuit with a sexual intend is cheating.
Any emotional investment/entanglement/pursuit with a romantic/sexual intend is cheating.

Genuine friendships are not cheating. After all, the half of the population is the opposite gender so we obviously have opposite gender friends.

I do not consider porn as cheating.
To me, if guys are going to a strip club together with friends for a bachelor party is not considered cheating. - as long as they do not across the physical boundary with the performers.

But the definition of cheating depends on each individual partner.
In reality, it is cheating if your hubby/wife/partner considers your action as cheating. -although you may not consider it as cheating.

I see sexual contact as cheating, but non sexual contact i.e hugs and kisses on cheek between friends same/opp sex not as cheating. I don't believe having feelings for someone else is technically cheating, especially if they acknowledge them but don't act on them. Your feelings belong to yourself no one else, and no one else has the right to dictate in that regard. Porn I don't see it as cheating but when it takes over / replaces an intimate relationship then its a big problem as some people can be addicted to it.

[animaLibera]

I believe that cheating is when you do/say anything that you would not want your partner to find out about because you know it would hurt them

[wstein]

Cheating is doing anything you agreed not to do. In a committed relationship context every detail is usually not spelled out. So in general, cheating is anything done without consulting your partner that negatively affects the commitment.

Often the terms of commitment are not agreed to in advance. As interpretation varies, what one person sees as not an issue, the other sees as cheating. Keep in mind that what might seems like a violation might in fact be an honest not seeing a problem by the other person. If you have expectations, its your responsibility to let your partner know in advance.

As far as the specific items mentioned, (porn, clubs, etc) there is no absolute answer to these. It depends on you and your partner and what you each find acceptable.