boyfriend keeps leaving me on read

okay so basically my boyfriend keeps leaving me on read and I know for a fact he's not busy, he's playing Xbox, how would I address this to him? And then he messaged me saying he's horny and I replied with "nice" and then he messaged me something and I replied and then he left me on read again, so basically I feel like "hurt" that he messaged me that he was horny but didn't reply to my messages