Was I right to unfollow my ex friends with benefits?

Long story short, 5 months ago I met this guy and we were in a casual relationship. He acted like my boyfriend, he helped me with so many things I needed desperately at that time of my life, and naturally I grew feelings for him and wanted more. He shot me down with "It's not you, I don't want a serious relationship with anyone". I respected that and said we should just then go our own ways, but he insisted that we stay friends. And I accepted... but he was such a shit friend. I tried reaching out to him several times just to ask how he was or invite him for drinks to catch up, but he would always he's too busy. And he never reached out to me to see how I'm doing, would just put reaction to my stories sometimes and that's it. So after like 2 months of him being practically nobody in my life, I found out that he has a girlfriend. So much for a "I don't want a relationship with anyone". Naturally it hurt me so I unfollowed him and removed him from my followers as well. But then few days later he noticed and texted me "Wow... so pathetic". I didn't respond to that. I mean, I do feel a bit sad that it ended like that, especially since he was my life saver back then, but why is it pathetic? He is the one who forgot about me, so...
Was I right to unfollow my ex friends with benefits?
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