I'll add my input to the original post,
I've cheated on damn near every gf at one point or another. Felt a little guilty at the time, but the relationships ended anyways and in hindsight, I was like at least I didn't miss out. Now mind you it's not something where I went and slept with a different girl every week or anything while in a relationship. It's a bit harder to get away when tied down. On top of that, it's not something I pursued heavily.
Reason I ask is because I'm trying to be loyal now, but the temptation with a hot piece of a$$ available to me at the moment is there, ready to come over...
My thoughts:
1) All my relationships ended...in hindsight it didn't matter if I cheated and with all but one I was glad I didn't give up opportunities.
2) Regret cheating on that one long term gf...would have had loyal life partner...
3) One of my ex's from recent years, I am glad I cheated...but...it's also likely the reason she started looking after she saw the signs I was straying...(hiding my phone, acting sketchy, etc. She tracked my location and she'd call me if I was at a place like the place we went to our first date...she knew I was out with another girl...)
4) Always opportunity to get girls in future, so not like other opportunities won't present themselves.
5) All that said, I don't want to mess it up with this girl I'm with now. She's far hotter and better than any other chic I've been with...and she treats me well.
You appear to backwards rationalize your actions. Perhaps you do so reflexively because you feel there's something intuitively wrong about being deceitful. So to cope with that discomfort, you attempt to convince yourself that your actions are justified in hindsight.
The reality is that you've just never been caught and had to directly look into the eyes of someone whose trust you broke and whose heart you shattered.
If you're not a sociopath, and have the capability for empathy, then lying and breaking someone's trust should feel instinctively wrong. Doubly so if you actually love that person and care about their emotional & psychological well-being, and in an infidelity context, their sexual & physical health.
While all relationships technically end via breakup or death, if you enter relationships with the expectation that they will inevitably end, and that expectation serves to justify your infidelity and increases your willingness to commit it, then that expectation will hasten the end through your actions and become a self-fulfilling prophecy.
You mentioned you don't want to mess it up with your current girl by cheating on her. That intent implies that you know cheating will somehow mess it up -- and answers your thread title's question for you, doesn't it? You go on to say she is hotter and better than any other chick you've been with and that she treats you well. It makes it harder for you to want to cheat on her, or perhaps it eliminates the possibility of you actually cheating entirely...
So you imply it is more worth to
not cheat on your current girl, and that you would only cheat situationally...
Cheating by definition is breaking the sexual & emotional exclusivity YOU agreed to, and thereby breaking your word and your partner's trust. Lying and deceit are inherent in it, because you know your partner WILL leave you if they found out (assuming you date women with dignity & self-respect), and if they do find out, having to look your partner in the eye once you've shattered their world is not something you can do without remorse unless you're a psychopath.
What is the difference between a man who cheats situationally versus the man who decides firmly NOT to cheat,
no matter what?
Character.
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A man of high character who
chooses NOT to cheat demonstrates integrity, loyalty, and self-restraint. He demonstrates these traits even (and especially) when experiencing the natural BIOLOGICAL urges that produce emotions & behaviour such as lust and gluttony. Both of which can cross into hedonism and become hazardous to one's health and relationships if not kept in check -- which is why self-restraint and self-discipline is a desirable trait to have in both yourself and a partner.
Yes, it is natural and biological to lust over many woman and spread your seed. That is NOT an argument for cheating,
that's an argument for staying single and/or having only non-monogamous relationships, should you wish to resolve yourself to your default biological hard-wired programming.
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TL;DR
You
cannot make a MORAL argument for
cheating using a BIOLOGICAL rationalization of why acting on
lust with women outside of a monogamous relationship is natural. Ethics have evolved since Genghis Khan and our cavemen days.