Most Helpful Guy
That sounds like antisocial behavior. He may feel that his time is more valuable than yours and only texts you when he's horny.
Although then again, you could just be texting him at bad times.
I just don't like to talk on the phone, so I respond to my texts once per day. If I'm particularly interested in a conversation though, I'll respond immediately.
I'm sorry, this really just comes down to the individual.1