What is required in order to prove alienation of affection?
Alienation of Affection requires you to prove that you and your spouse were in a loving and healthy marital relationship and but for the malicious actions of a third party, your spouse and yourself would have continued in your harmonious relationship.
Is there any potential value in pursuing an AA suit if the 3rd party lives in Canada? (Would a successful AA suit in NC have any validity outside of NC for collecting damages?)
If the 3rd party is subject to jurisdiction in NC yes.