He gave us horsey rides, and piggy-back rides. He let us make him up with my mother's make up. He let us (girls) roll his hair in bobby pins, and tickled us, and sang us songs. He was really a lot of fun.
He took us camping, and fishing. He taught me to fish.
He told us endless stories about all the wonderful jobs he's had, which really were adventures.
He was a forest ranger, and a trainer for boxers. He was a logging camp cook. He was a sargant in WWII and landed in Normandy. He had a few choice words to say about Patton.
He told jokes, as often as we asked for them.
But he also punished us severely with a belt when he believed we had misbehaved. Even when we hadn't.
Anyway, it's water under the bridge now.
I'm sure you're not like him, and I mean that.
One time, he told me not to play with the landlord's kids because he had had a fight with the landlord.
I was about five, and they were playing in the yard, and asked me if I wanted to play nurse (they were soldiers fighting a war, of course). And I forgot. And when my father found out, I got the belt.
Again, long story short, kids can feel betrayed. Just please know that kids have feelings as strong but more delicate than your own.