semen = good for vegetarians?

My girlfriend is a vegetarian. I've heard semen is rich in protein, something vegetarians are somewhat deficient in. Does this hold any water/should I use this as an excuse for my request that she swallow?

Basically you're Girlfriend's a cannibal.

That and she's consuming what could be a future child between you two. Infact fuck that millions.

Oral is a sick fucking way to please yourself and it's disgustingly cruel, killing millions of humans in the process.

I fucking love it. <3