I have never really bee a fan of both characters separately lately. The only time I enjoyed Ryan was when he was with Gillian, and I loved Greenlee with Leo. But I think Rebecca and Cam have a really good chemistry together. Maybe it's because they are such good friends in real life. But I have actually (and surprisingly) enjoyed the Ryan and Greenlee scenes we have had.
It looks like they might be reuniting in the future, and I hope they do. Ryan and Greenlee make a good match, they have so much in common and seem like they have fun together. I hope Ryan and Greenlee get together soon!