I've had my male and female snow corns for 4 years now and they've always lived together. Of course they are brother and sister too, so not sure if they sense that or not. Some animals are very attuned to siblings, some not at all. They have always cohabitated fine. Never had a single problem.
I'm almost certain they are from the same clutch, they are male and female, and they are roughly the same size. I have them both in a 50 gallon viv with a large waterfall on the left, a full daylight 100W heat lamp over an imitation tree branch in the center and two separate imitation stone caves (hides) on the right side and another longer imitation tree branch from center to right. Spread throughout the enclosure are a few large artificial plants that they sometimes like to hide in. The substrate I normally use is green indoor/outdoor carpeting cut to size. (trying Reptibark now to see how they like it) The heat lamp I have plugged into a timer so they get 12 hours on, 12 hours off on a regular day/night cycle. All of this mounted on a beautiful enclosed wood stand with doors for miscellaneous snake supply storage.
Sometimes they will stay in the same cave. Sometimes in separate caves. Sometimes one in a cave and the other in the leaves or behind a cave. Sometimes both of them hidden in the leaves or behind the same or different caves. There is plenty of room for them to move around, climb and explore, a large pool for them to bathe if that is what suits them and they can sleep/rest wherever they feel the most comfortable. As I said, I've never had any problem with either of them.
I feed them either f/t or brained adult mice depending on available supplies and give them purified water from a Pur brand tap water purifier (same stuff I drink)
The most difficult task is of course, cleaning their habitat. Occasionally they will take a dump in the waterfall and that's time-consuming to remove and clean. In spite of my best attempts at scrubbing with soap and water, minerals still built up on the waterfall, leaving it a bit discolored. If it gets too bad, I'll take it out and substitute with a regular water dish while I use other means to try to remove the deposits, then replace it after it's been very thoroughly cleaned of all traces of chemicals. The astroturf made general cage cleaning a breeze as I generally keep a couple extra pieces cut to fit. Not sure about this Reptibark yet, but they seem to like burrowing into it and are not using the caves as often. Just another option for them. Overall, the general cleaning is not too difficult, just takes a couple hours about every other week, a little more if they mess in the waterfall. Hey, it's a labor of love.
Some people like to keep it simple. Some people like extravagant. Do the snakes know the difference? I don't know, but I enjoy seeing snakes in a natural environment and provide mine with the closest thing I can. Not everyone can afford such a setup (mine cost almost 700 dollars). I would recommend reading as much as possible about keeping snakes in captivity and provide the best habitat you can at the time. Some people use newspaper as a substrate, some use small cardboard boxes as hides or a flat stone resting on smaller stones tilting up toward the back of the cage. A perfectly healthy, happy home can be provided for next to no cost, and you can always buy or build more as money and time become more available to you.
As with anything you might want to do in your life, it is always best to first do your research and take action based on informed, planned decisions to minimize any potential problems. Okay, with that last, I detect my military supervisory training mode starting to kick in and risk assessment lecture gearing up so I shall end this rather abruptly before I bore you to tears. LOL
Above all, love your snakes.
Erik