Is he ignoring me?

My ex bf and I have only started texting recently and yesterday I sent a cartoon pic of a lady on a moon sleeping and dribbling at the same time saying good night. He changed subject. Made me feel a bit stupid cuZ hes the only one who rarely laugh at my lame jokes others finds quite funny. His jokes irritates me.....ALOT. He wanted me back but I dont want him back for a lot of reasons.

And. I DONT intends to. Last year he kept me waiting for him for 4 months like a f idiot and gave no good reasons for it either.