Just so you know, snakes don't have emotions or feelings. What you think is cute and "cuddling" is actually the larger snake showing dominance over the smaller snake. I don't think they stopped eating because they couldn't see each other. The MUCH more likely explanation is that when you switched the tub, there was either something wrong with the environment (temps, humidity, not enough hiding places, etc) or they could have just been stressed from being moved.
You're really opening yourself up to BIG risks by keeping them together. Say one of them gets a respiratory infection... Well, you now have twice the vet bill because if one has one, the other is going to get it too... How about if one of them regurgitates a meal after you feed them and move them back. How are you going to know which one? And no, ball python cannibalism isn't COMMON, but there are documented cases of it. There are MANY more reasons that I don't have the time, energy or desire to list, but if you do a search here for "cohabitation" you will find all the reasons it's a bad idea.
There are a lot of experienced keepers - both hobbyists and breeders - on this site with decades and decades of experience, and I guarantee that not a single one would advise you to keep those snakes housed together long term for ANY reason.