What does it take to become limerant about someone?

I've just been learning about Limerence over the last month or so. I'm realizing I've been allowing this to fuck up my life basically the whole time.

I was in a relationship with my LO for two years, until I realized I was in love with an illusion. When she broke that illusion, I fell out of love with her and the relationship ended soon after.

But I became limerant about the next girl pretty much immediately, before my last relationship even ended.

It's like my brain WANTS that limerant space filled with someone. My brain WANTS someone to obsess over.

Managed to break the Limerence again with this new girl to save our friendship and now that space is just empty in my head.

But I can feel my brain reaching and searching for something to put there.

Mostly, it seems to want to assign that energy to anyone with a pretty face and a shared interest that shows me affection.

Is that all it takes?

I've felt the seeds forming a couple of times, but I'm quick to shut it down because being in that state is utter agony.

Basically, my idea is to trick my brain into making myself my own LO. If I were as obsessed about my own life and happiness as I'd been about any of these imaginary versions of these girls I've obsessed over, I'd be a fucking millionaire.

I realize the idea is likely to be dismissed as absurd, but that's what I want. The next step to getting there is understanding how this all works, so any insight would be amazing. Thanks to anyone that read all this, and extra thanks to anyone that comments!