I had an exchange recently here where I was asked

"how [is] what a person does when they are SINGLE indicative of how they'll act when they're taken?"

The question suggests women act sexually differently when single than how they act when in a relationship. The suggestion apparently is a change in mindset once in a relationship: The woman has no strings attached casual sex while single; but immediately discards on a dime all of the preferences and conduct associated with casual sex when she gets a guy for a relationship.

So the argument apparently is that you cant' compare/contrast how a woman acts, who she's "attracted" to, and what she did while single, with how she acts, who she's attracted to, and what she did while in relationships. And, importantly, we can't use any of the past casual sex info to tell us how she'll do in a relationship. Because they're two separate things governed (presumably) by two separate female attitudes that change depending on her relationship status.

But I don't think it's that cut and dried at all. A woman's preferences in men are seamless and not very malleable, and it doesn't shift based simply on her relationship status. As a poster said a couple of days ago (can't find it right now, and paraphrasing): "Who you have allowed over time into your vagina says a lot about you." And I think that's true regardless of the context in which the sex took place.

A woman's one night stands, her flings, her STRs, LTRs and everything in between, all of her past sexual history, is relevant to how she will be now, and whether she's a good or bad bet for a relationship. Who she had sex with, regardless of context, tells us:

--the kinds of men she 's SEXUALLY attracted to. The kinds of men she likes fucking. Not this bullshit "attracted for a relationship".

The kinds of men she actually likes to fuck do not change. Her strategies and tactics change. Her preferences don't.

--the kinds of activities she likes (drinking, partying, using drugs, staying in, cosplay, whatever)

--the kinds of sex she likes

--the kinds and character of men she actually has had sex with

--how she enjoyed/did not enjoy the sex

--her view of sex, what she believes sex is for, and how she integrates sex into her life

--her ability (or lack thereof) to forge and sustain relationships

--how important/unimportant sexual relationships with men are to her

--the kinds of things, conduct, likes, dislikes, etc. that form, sustain, and end her relationships

--how she acted within her relationships

--What ended her prior relationships. What happened leading up to the breakups? Why did they happen? Who did the breaking? How did she handle the breakups? How did she do the breaking up? How did she handle it when guy(s) broke up with her?

--Behavioral patterns and trends

--behavioral, emotional, mental and financial stability

It is not just about sex. It is about how she relates to men. It is about the role men play in her life. It indicates who and what men are dealing with, the risks attendant to any kind of interaction with her, and how any entanglement with her is likely to play out.

It isn't just past performance in her relationships that matter. Her past performance over her entire sex life matters. Past performance in her dealings with and relationships with men is extremely relevant. Her relationship to her own sexuality and the role her sexuality plays in her life are extremely relevant. And ALL of her sexual conduct and ALL of her past history are relevant, including her one night stands, her flings, and her STRs.

In every other human endeavor, the best predictor of a person's future performance/results is his/her past performance. Want to know how she's likely to do in the future with you? Look at how she did in the past with others. It's relevant in education, employment, and credit history. So, past performance is relevant to sex and relationships too.

TLDR: All of a woman's sexual history matters in assessing her character and fitness for a relationship. It's all wrapped up together and can't be separated out, because all the info is crucial to an understanding of her likes, dislikes, predilections and preferences. Her past performance is VERY predictive of her future performance.

Challenge my view.