My girlfriend is a sex addict
My girlfriend is a sex addict. So, whether I am in the mood or not, I try my best to accommodate her.
I have ordered tonic and Irish moss online to keep up with her. I have to do two rounds with her each time we have sex.
Don't forget that you cannot finish this woman. She will be as strong as ever while you will start walking as a very old man with a bad back.
You may think that drinking all the stuff you ordered online will help you, but they will not help you forever.
Yes, you have to take care of your body, but the primary reason for your drinking certain things is not that you wish to be healthy, but you are trying to boost your sexual ability.
A good relationship is not just based on sex. So, any day you can't satisfy this girl, she is going to leave you. If she is a sex addict as you say, you should encourage her to go for therapy.