That happens with some people, not all, in my case. It's easy for me to hug my mom and tell her that I love her, and it was harder for me with my dad. I don't know if it had to do with his parenting style because he was very strict, but even so, he found a way to be tender. More than anything when he got older...
In any case, follow your heart, because that's what he later reproaches us for... that's what happened to me, I wanted to tell him, but I couldn't, I hope that where he is, he knows, and I can only trust that it's like that.