Not trying to get in the middle of the relationship but is he not wanting his scores to be pulled to save himself the inquiry or because he doesn't want you to know the details on his credit? If it's the latter, I'd work on the trust level between you and your SO (same thing applies to how much reserves he has)... if it's the former, then he's just being responsible about unneeded credit pulls, however a myFICO.com credit pull wouldn't impact his scores so I'd suggest that to him.
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