Regardless of how quick or slow they've put out, I always tested their trust. There are the cases where they want to quit fvcking around and get more serious. In my experience though, the one's who put out fast usually fails the test pretty fast too. There's no need for prejudice, various red flags will be abundant if they have no real intention of quitting their old habits. Long before you're in too deep to back out painlessly.
Trust is something that's built up by giving it and seeing that she's not breaking it. As such the first few things you trust a woman with should be for the sake of testing her trustworthiness. Something you'd know if she betrayed and that wouldn't heavily affect you. But still something that a woman should understand to be a thing not to break trust about.
I remember the first woman I fvcked when I started learning about game. She put out on the first date, obviously I let a few things slip by since I was a noob. However, within the 4 next encounters I knew she was lying to me. Hid her phone screen while texting, made up random excuses about what she did. Lied about being asleep not hearing her phone when I called 45m mins before a date, I got busy signal after 20 seconds indicating she rejected the call. Yeah, it's not easy to hide the fact that you're handing your pvssy out to multiple dudes... I went ghost real quick after the 4th date when all the pieces came together.
Their past count isn't a definite answer, but it will tell you what to
probably expect. I'd say a count of 0 can be risky as well depending on her personality, she may later be in doubt and curious to see if there's better d!ck out there...
I'd say between 2 and 8 is the safest range.
Am i saying sluts can’t be loyal? Absolutely not. If your alpha enough and she fears you yes and that’s what I did.
Instead of stressing yourself out by trying to be abnormally alpha, sluts can be loyal if they've really hit the breaking point where they're fed up with their old ways. Not saying "be beta", I'm saying don't take "be alpha" too far. As you said, you don't want to constantly be on edge as it's more stress than any woman is worth.