I see this all the time "Is doing X cheating"
The my answer is always the same, "X is cheating if your significant other thinks it is cheating."
And 9999 times out of 10,000 if someone is asking "is X cheating" it means they know it is.
To many of the guys here (myself included) seeing a AMP or other providers is not a big deal, but to many of our partners it is. Thus it would be cheating.