Is it normal to be addicted to a person?

I agree with thegypsysailor. You need to let her go. She has no obviously as no intentions of taking your relationship any further than just sex.

Staying with her has no doubt, already caused you emotional pain and with time that can heal, however you say she is partying all night with men and doesn't want you to go.

Just from that scenario I get the impression she is probably having sex with multiple people, and strangers at that. Then she comes home wanting to have sex with you too? She could easily catch a disease and spread it to you. I'm pretty sure you don't want to spend your life with herpes or aids or some other type of STD.

You may have strong feelings for her, and may even love her, I don't know, but she is not worth your life or time for that matter.

It's completely apparent you understand how sick this relationship is. I'm not sure if you think you can change her back to who she was before, or you're just afraid that if you throw her out you'll never get laid again, but neither is true.
Time to stop letting this girl use you, toy with your feelings and dump this slut. Each day you are with her, you are losing self respect, compromising your values and making it harder to kick her out.
Time has come to move on, and I do not mean tomorrow!

U should start bringing other women home and see how she handles it. Start being promiscuiois ur self and see how deep her hooks really dig. If she flips out; then she cares and is just being a free young woman. But if she let's u do ur thing, it is purely a sexual thing and u shouldn't be living with her. Especially if she's talking like that and all her friends are dudes
That's the biggest red flag I've ever seen. "All my friends are guys... girls just seem to not get along with me" because she's a bfstealing hussey? Otheir women see her as a threat or whatever and avoid her

What you guys need to know is that she is not having sex with anyone else. I know her well enough now after nine yearsto know that she would tell me if he waspart of the reason she came back to me was she could not get satisfied by anyone elseI know I should leave I know thisI have tried several timessometimes I feel as if there is something broken inside me stopping me from being able to my therapist says it is and I'm healthy addictionand believe me I know about addictions having been addicted to several other substances beforebut I was able to quit those cold turkey when I realize I needed to there is just something about this one girlunhealthy and bad for me though it is for some reason I cannot let goI have went as far as looking at apartments the home we rent is in her name so I will be the one that has to leave but I feel helpless as if I'm just doing this for the motion I don't really believe I'll go when the time comes I feel as if I am in bondage.

Just find a way to detach yourself from her.

If you're having that hard a time to get up and go then try to emotionally distance yourself first. Think of all her flaws and how she treats you; eventually you'll have an easier time getting out of this mess.