Travelling overseas with my friend made me realise my dad's my best friend.
What went on to make you realize that?
I discovered that I have more fun with him than with anyone else.
It's great that your dad is your best friend. Being close to your parents is awesome, because they'll always be there for you. I'm glad you have such a good relationship with your dad.
I know, I love my dad.
Haha, I wish I was that close to my dad! Cherish every moment, because time can fly by really fast. You should tell this to your dad, it might bring a tear to his eye!