You will should never keep them together in the same cage. You will need to research the species more and find out the signals, colorations etc that female gracefuls show when able to breed. A 65 gal is still too small but is sufficient for one. I keep my male panther in a 260 gal reptarium and that to me is still to small to house both him and my female. The humidity wont be such a huge factor if you maintain a good habit of watering and misting. No chameleon should be laying on each other....that sounds a bit odd. Housing them together is far too stressful for them, you may not notice any 'signs' of stress or aggresion but its there trust me. Don't attempt to breed them until you have enough experience to do so. Breeding is a huge project and that eats up a lot of time. Gracefuls are egg layers. You will notice if she is gravid she will be stuffed with eggs that you will be able to see once she is ready to lay. Chameleons are a very expensive and difficult lizard to keep. Don't let all of this discourage you though. You may have all these people here telling what not to do and what you are doing wrong but its from experience. We all have been in the same shoes before, I know I have! I owned two gracefuls as my first chameleons too. I was told it was ok to house two, a male and female (which the female ended up being a male) in a 38 Gallon reptarium. I soon learned that this was not a good thing, they died. But I didnt give up the hobby. You just have to be willing to do the research and learn from others mistakes to limit your own. I am attaching a picture of what my female panthers cage looks like.

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1.0 Chameleo Chameleo Calyptratus

1.0 Leopard Gecko-Matilda

1.1 Furcifer Pardalis (Nosy Be)-Hooloovoo and Popsicle

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