Cohabitating reptiles even as the same species is not recommended. Insead of just telling you "no" I'll list the common reasons why.
1) Cannibalism, not common, but there are DOCUMENTED cases. This alone isn't worth the risk.
2) Stress. Even the most friendly snakes get stressed out, so why cause the stress? Snakes have no want or need to be with another snake unless it's for breeding purposes. Other than that, it's just an unwanted roommate that they can't get away from.
3) Space. They will constantly try to dominate eachother for the best spots in the enclosure, even if you have multiple hides, you'll mainly see them together in one spot. People usually see this as "cuddling". It's not cuddling, they are fighting over the best spot.
4) You wake up in the morning after feeding and there's a regurgitated mouse. Which one did it?
5) One gets sick, now both are sick. That's 2X the vet bills, 2X the medications, and 2X the stress.
6) You are told the new snake you bought is the same sex as the one you already have. a year later, you find eggs in the enclosure. You have not prepared, no incubator, no space for babies, and no one to sell them to. What do you do now? The pet store/vet/person sexed them wrong.