I have little to add to ChandlerFan's and Grace-like-rain's replies.
Your situation does not look wrong to me because you are not working out for the SOLE purpose of looking good to her. It is just yet another reason to work out and look good. So I don't find any harm in it.
The only catch is - you need to sign up to Grace's workout plan (ask her for the link). She is the "guru" of all gym-goers in CC Singles. To not sign up is a severe violation of your CC Singles membership leading to a possible termination from this forum.