For example my fp could take 10 hours to reply or even leave me on read and I'd tell myself they're just busy like most mentally healthy people would (though I'm still super obsessive double texting, stalking their social media or checking my messages every 5 minutes) but once I stop idealizing them I'll get angry at them for not texting back or even get slightly obsessive about it in a negative way. I'll pick out things that I used to admire them for and start shaming them for it (in my head obviously). Anything they'll say I'll try to turn into a negative thing or an insult towards me but when I'm idealizing them they could literally make fun of me and I'd try my hardest to not make them look bad to myself and others, even though I'm obviously hurt by their actions.