My girlfriend wants me to shave my head with her?

So I have been dating my girlfriend for a year now, and she decided that she wants to shave her head and I fully supported that once she made up her mind, after a couple days she asked me if I'd shave my head with her because she doesn't want to do it alone, I was honest with her and told her that I didn't really feel like shaving my head but that I fully supported her and I'd be there for her, She then started telling me I'm selfish and self absorbed, and that I can't even do something meaningful to her with her, I'm just wondering, is she right?:(
My girlfriend wants me to shave my head with her?
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