If they are both male, they will likely fight for dominance as they mature. If they are a 1.1 set, they can and will breed as sson as they are able, and that will likely be too early for the female's health. If they are both female, you might be able to avoid the above two issues, but you still have to address the following:
Stress -- Corns don't "like" company and are normally solitary animals
Illness -- If one animal is regurging, you may not be able to see which one it is soon enough to help, and even if you do, now both of them may be infected whereas you could have isolated the sick one
Normal health issues -- Which one isn't drinking enough water? Which one is spending too much time on the hot side, or the cool side, because the other one forces it to the outskirts? There's just no way to know what's going on in your vivarium, if you cannot even isolate the movements and activities of any particular snake.
Hope that helps some...Good luck! 
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Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742