["My husband and I have been married for 7 years and I've been faithful the whole tie.", "That great news.  I don't know how rare it is but in the 14 years I've been married we've seen a lot of other couples suffer with infidelity.", "That's good there hasn't been any  in your marriage in so long."]
I find faithfulness requires love and effort.  Both together are necessary.
I have been with my husband 7 years and have always been faithful.