Why do they do this? How do you lose interest in a good and promising connection with someone?
I've constantly had this happen to me where I'll meet a guy, we'll get on well and he'll just disappear. Some have come back, wanting to chat and be friendly which I quickly put a stop to because there's no way you're going to use me for entertainment then disappear again when you've had your fill.
You are a drug and not a person to them. Female attention is their drug of choice. They got their fix. On to the next.
When a guy ghosts you, it’s usually because there is another woman he is interested in and he’s putting his time and effort into her. When a guy finally hits you up after ghosting, it means it didn’t work out with his first choice and he’s trying to use you as a placeholder until he meets someone new. If he doesn’t respect your time, he doesn’t respect you or even see you as a person. Don’t be anyone’s backup choice
They are interested in having sex with you, not a relationship. If that goes off the table then they'll disappear off to find a pickme.
Fear and/or insecurity
It's so common for men to turn away from a good thing. It's bizarre to me because I would love to have a great relationship. I couldn't even fathom turning away from it. Especially when good connections are hard to find (well for me anyway).
Could be avoidant attachment. What’s YOUR attachment style? Might be an “anxious-avoidant trap” pattern.