This is shown with their head to head record being 24-16 in favour of Nadal and the Spaniard himself shed some light on their relationship in a recent interview including about their charity match they had together in Cape Town.
"We’re having a great story together. We have had long careers. Facing each other in the most important tournaments for such a very, very long time. Creating positive things for charity, playing in special events like we did in Cape Town in South Africa like we did a few weeks again.
It’s a rivalry, of course, but it’s also a friendship"