Why did my ex move on so quickly?

Different tack: I don’t think you asked what you want to know, you asked what you’ve heard other people ask.

Of the ones I was able to talk to about it all rationally later, some of them admitted they “used” a new “hook up” the same way some people use drugs, to dull the upset over our breakup; some said (perhaps as revenge) that I was easy to replace; some said they just got lucky. Most didn’t stay with the quick replacement, but a few even “panic married” the replacement, as part of being upset about the breakup.

What I suspect you really want to know, is one or more specific questions.

What is a good investment portfolio for someone starting in their 20s? 90% VT and 10% BND for a Roth IRA then 100% TDF for a 401k?

I know from my own “misadventures” in love, that my ex’s were able to move on quickly because they were more attractive than I am, and far less shy, and sometimes because they were far less picky than I am.

or if they moved on quickly because they were secretly starting up with their current person before you broke up;

Such as, if your ex moved on fast because they never actually loved you;

I'm looking for an answer from people who consider themselves "Gender Critical", or transphobic, or TERFs, and my question is this - Why would you refuse to use the pronouns someone wants? What does it cost you? Where's the harm?

or if they moved on fast because they can control their emotions like a simple light bulb;

and so on.