He's going away tonight.
He texted me this morning at 7 30 am. I didn't see the message until 8 15 because I was busy getting the kids ready for school.
He wanted to come and see them. I said no, they didn't have time. They needed to finish getting ready for school.
He will remember this 
For background info he recently didn't the see children for 2 weeks and spoke to them only once during this time. He refuses to have them at his overnight. He last saw them (after a week of no contact) on Monday. He messaged while I was at the shop asking if he could come round. The children replied. He then waited until they were in bed and started crying because I wouldn't give him money.
AIBU to think if seeing them before he left was that important he would have made sensible arrangements to do so at a time convenient for us?