i guess what i'm struggling with is that a.) you (generically speaking) were attracted to a person for certain reasons, etc. b.) this person likely was consistent in his or her's activity requirements BEFORE he or she met you c.) so what changed? Did you just ignore certain obvious and visible facts hoping that he would change???
some do (like myself, but i can guarantee you that i miss it something fierce) but most don't...maybe some mitigation, but the desire is always there...fortunately for me, my bod's falling apart so no biggie...