Cancelling a date for the 2nd time?

I feel horrible, I really need to cancel a date tonite.Im not 100% into it but hes nice and we had a nice first date. The problem is I have kids, he doesnt and he wants a family and I dont. Also For the 2nd time Im just exausted to go out tonite.Had a PTA event until 12 last night.Last time I was exausted because my kids. Hes so nice Im a chicken with calling and I dont think he does texting.