What is your moral or basic honest view on one night stands and casual sex outside of a relationship?

I’m not sure I understand this question, but I’m going to take a stab at answering it.

If you mean a monogamous partnership arrangement where both parties agree to partnered romance and sex only with each other, that would be cheating and both parties need to be clear on what will happen after any betrayal occurs.

If you mean an open arrangement whereby the involved parties agree with and are okay with having romance and sex with other partners, that’s fine by me if it’s fine by them. Some open couples/polyamorous people put further restrictions about what kinds of sex and romance are allowed outside of the primary relationship(s), but that’s always seemed like micromanaging and obsession to me (except maybe the use of barrier protection which is just good sense in lieu of accurate STI test results).

If you’re talking about a single person having casual sex and one night stands, there are no “outside” relationships because they’re all equally worthwhile. Brevity and an absence of traditional romance don’t make nontraditional relationships invalid. In fact, consensual, pleasurable, brief sexual and romantic arrangements can have as much worth, validity, and meaning as long-term traditional marriages. In my mind, consensual and honest one-night stands and hookups between equals are more valid than abusive traditional marriages based in oppression, bigotry, fear, dysfunction and control.

It’s not the type of relationship style that matters. It’s the respect, dignity, choice, consent, and consideration that happens between the participants that does.