Corals Touching Corals - Wife debate - PLS HELP!

[Fragzilla]

OK - my wife and are have a debate going........

Corals touching other corals, what the deal?

Currently we have all soft corals and one of us thinks its OK for some corals to touch and some not.

Can someone with good knowledge help settle this debate?

Please give us a breakdown of what can and cant touch including hard.

Thanks in advanced!

Jeff