Is this a valid reason to ghost someone?

I want to ghost this guy I’ve been seeing for months. I don’t know what happened but he goes several days without talking to me. He will text me every one in a while but never consistently anymore like he used to. The days we do talk are days he will mention sex middle conversation. He only responds to text with me telling him I want to end things and when I ask “do you want to break up”. His same responses are “lol what are you talking about?” I’m tired of it and won’t to ghost and block him without having to explain anything. I already blocked him before for a few days and he got mad at it which made me feel bad. I want to feel block him but I’m going to feel bad again.
Is this a valid reason to ghost someone?
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