Say no more
Let's start for the basic and is that both Sanji and Kinemon are perverts but even with that peculiar trait in them, they still favor a woman over the rest
I was surprised (in a good way) when i found out Kinemon was married, like the way he referred to o-Tsuru when he saw her after 20 years was really romantic, saying how beautiful she still is after all this time :') ; is clear that even if Kinemon lust over beautiful women, o-Tsuru will always be the special one.
We know how Sanji is and how after ts he's getting ladies here and there but at the end of the day he always come back to Nami
With the last chapter we also got this:
That sounds like when Sanji didn't want to see Nami at her eyes after all the things that happened during WCI ~
Oh Oda, i see you
Feels free to add more details ;)