He never missed me

We broke up 4 months ago. The whole month before that he had been distancing himself, taking too long to answer. I had been trying to be understanding and give him space. He stopped saying about love or even responding when I said and stopped using heart emoji, he basically became unemotional. I had been trying to talk or support him but eventually he dumped me over text late at night when I asked if my efforts are reciprocated. he offered to be friends and meet if I need his support but I said that I want to be no contact and we will not be friends but we still should meet to talk like adults and have a closure. he said ok no problem let’s meet and never texted me again. we never met and never spoke ever since. he deleted my photo from his insta page and after 2 months one girl texted me saying that she met him at the dating app. basically he move on really fast and never texted me again. he just ives his life like our 1,5 year relationship meant nothing. what do you think? will he ever regret or miss me?