Yeah, that's the problem. Once I married a woman I had known for six months, because that whole time she was crazy about me. I was the center of her world. It felt great - I wasn't used to getting a lot of attention from women, and here was one literally begging me to marry her. I went for it. But for whatever reason (maybe God thought it was funny) there are people out there who flip between over-the-top loving someone and over-the-top hating him, for no external reason. My ex-wife kept the crazy under control before we got engaged, but after that about a couple of times a week she would flip out. I ended up divorcing her after six months of marriage - the last straw was when on my birthday she flipped out because I wanted to celebrate with my family and not just with her. (She was extremely jealous - not just about other women but about my family and even my dog.)

Normal social interactions don't prepare you to deal with a person like that. Even long after the divorce, I would still wonder if maybe I was the one who had been doing something wrong - after all, she was usually so sweet and loving!

I think it’s only called that when it’s being used to manipulate you, paradigm case being an abuser who swears they didn’t mean to they love you so much they weren’t thinking straight please say you love me

Love-bombing a love-bomber can get epic, but then there's the fallout when the one drops the act and is terrified by the possibilities that: you weren't acting, you were just matching their energy and can meet them down in the trenches before they can actually drag you down, and/or you knew what they were up to and refuse to be made to have a problem with it(see "weren't acting").

Now you're stuck with a bait-and-switcher who cannot grasp that you might not be pulling the same trick they just failed to land.

If this sounds like a lot of drama and a massive pain, it is, and that's why its not recommended over disengaging once you've realized what's happening.