<human>: Can you condense the text into a few key points?

My [M25] girlfriend [F21] of one year wants sex literally all the time. Sometimes I feel like my dick is gonna fall off. Like I'm not sure if she's addicted to sex or what, but it's starting to be a problem. 

She'll wake me up in the middle of the night for sexy times, starts to blow me before I wake up, and asks for anal at least once a week. I don't particularly like anal, but every once in awhile I guess it's fine. For the most part I like our sex life... I just wish she'd cool it a bit and we'd have sex only maybe 3-4 times a week instead of her requests for 10-12 times a week. 

That I can't keep up with her sex drive is making me insecure and I'm afraid she's going to leave me for someone with a higher libido.
<bot>: My girlfriend wants a literal fuckton of sex. I can't keep up and it's making me insecure. How do I handle this so I have less sex but I keep the girlfriend I love?