Dennis laughed. Long was an understatement. "The poor owls I'm going to need to carry the whole letter. I think I've written a whole book by now! But I've had a lot to say." When he felt like he couldn't talk to anyone else, he turned to his parents. That was just the relationship they had.
Dennis took the hand that was offered to him and didn't immediately let it go when he stood. It would be a lie to say that he didn't feel comfortable with Faye. He knew he liked her and they got along well, always had. "I don't know. That's a good question for... Hagrid? Maybe Charlie Weasley. He would know those things for next time, right?" Best not to try it now though, just in case.