The answer is yes and no to can you both use the photos.
If it is a MF photo I would say yes go ahead. If it is a FF photo I would say no - someone may TINEYE you and get you reported as a scammer. Then if you are on AW with a lot of credits they could lock/cancel your profile and all your credits are forfeit, no comeback. [Another reason to cash your credits regularly]
If you want to share your photos, have half each, just don't use identical ones.
I always think unless you are working with someone what is the point of a shared content shoot. It is a "male escorts" favorite scam for free sex. I get my clients to take interactive ones with my own camera. I am then in control and can crop the faces off