Love does not have to be explicit. It is fun to notice the hints and the hidden meanings.
Apart from that i really think Sanji desrves Robin. Despite his womanizing personality, he's a great guy with style. I kinda like their little moment during the last color spread.
I think Zoro and Tashigi is obvious. Not a lot women can make Zoro lose his cool. They are pretty much opposite.
This is true. He really does lose his cool, just like Nami does with Luffy :)