Many times when we dream it is really an OBE (out of body experience). When this happens we tend to gravitate toward others we know in life, sometimes that are also experiencing an OBE. Since our subconscious is running the show we can repeat our actions quite often and it can appear to be repetitive.
The other possibility is that one or the other is visiting each other's dreams. Its best to talk with these people. Don't come up and say "hey, did you dream..." because they're going to think you're an odd ball if they don't have the same spirituality. However, you can say "hey I had this weird dream last night (or whenever it was) and you were in it!" Then continue explaining the dream. If he does share the same spiritual viewpoints he may tell you if he's dreamed it too. If not, then it may just be a regular dream that your subconscious has pulled him into for whatever reason, probably because you work with him and see him often.
Without any details of the dream I can't decipher anymore than what I've said.