I just want to say this is my BIGGEST fantasy! Me and my girl have both recently gotten into weightlifting and while she says wants to put on muscle without getting 'too big', secretly I want to push her to bodybuilder levels! There would be nothing sexier than watching my girl (and myself!) transform into this muscular gods! Maybe once she starts making some gains she'll get addicted like I have and will want more! Already we just like the act of working out, the feeling of getting stronger, more powerful.
Then again maybe this will just be my little fantasy though she knows I like muscular women.
Hmm, maybe I could write a story?