Women don't have a fucking clue what they want mate. She doesn't want you to get bigger, so you have to stop working out. Then she won't want you to get fatter, so you'll have to start doing something else. Then you'll be too skinny so you should go to her freaking crossfit class with her. Then she won't want you there because she'll think you're checking out the babes. But you won't be allowed to stay at home and post on GetBig while she's away, because she won't want someone who is lazy and unproductive without drive. Blah Blah Blah.
If it's not this she's bitching about it'll be something else. What she's saying is she doesn't want you to be you, she wants you to be the way she wants you to be. At least, that's what she thinks, because she doesn't really have any idea what she wants.