Best friends-no. They don't chase one another but if they cross paths they don't stay around each other. Its a standard 220g. They aren't always together but when the moon lights turn on the male coral beauty gets below the female and they stay like that for around 10 seconds as they rise up the tank and go across. Never checked to see if that's how they mate since they do it every night. The flames do it a few times a week, the beauties twice a night.
They don't eat corals that I have. Not sure if it makes a difference but I feed the tank at least 3 times a day and they get a nori sheet every morning. When I feed them twice a day they still do not nip.
Its a mixed reef with acros, zoas, acans, euphyllias, leathers random lps. Sounds fancier than it is. They do nip acro polyps so don't get millies and expect them swaying in the flow at least that's my experience. The corals do grow just not great pe. A barf bonsai is a good example of a acro that still has pe and they don't touch them.