[Need relationship advice] Mono Dating Poly

I would appreciate honest comments and generally any feedback on this.
This will be a long post
You have been warned.

it goes like this:
There is like a community club which is also a rehearsal place for people and bands to come to practice and make music. They also organize a festival each year in which anyone can come and put up a show.

So one day I was hanging out there, and this girl approached me (we knew each other only we very briefly) and asked what do I listen to besides all of these noisy and scary metal, and, I mentioned some bands and local artist (non metal) and we agreed to do a couple of songs (btw Im a guitarist she is a singer), I brought in a bassist and a drummer and so we began rehearsing.

After a month or so of rehearsals we get to know each other better. And we get to they show. We performed, it was great.

Right after that we agreed to go out and eat something downtown and went to the park to chill.
We started conversing and it got more and more intimate and deep, it was obvious that she was really into me and I was into her, we then kissed. We continued to chat after that and things got more serious half hour later we were having sex.

It was great, and it was something I was very grateful to have since it has been 2 and a half years since I had my last relationship and in that time i had only a few dates which led to absolutely nothing and left me very disappointed and sad.

I felt like I felt in the past. I think I felt love again tho Im not sure. All I can say that I had a very good time with her and it made me feel whole again, forget about problems that I have.

And it hit me like a train, I suddenly realized what qualities I really wanted in a girl. I wanted someone intelligent, someone I could share my ideas with, someone to have deep conversations with. And she has those, shes also kind of a geek, loves to read and listens to a lot of music (though our tastes are very different, Im a metalhead, she listens to kind of soft music haha), and we are both russian too.

Here comes the part where I need the help:
During our conversation she casually mentioned that she is polygamous, and she slept with... your eyes will fall out when Ill say the number... 31 men.
She also told me she used to date a couple of guys at the same time.
I wasnt judgemental at all, I listened closely as she listened when I spoke.

But not only that, turns out she is the kind of feminist girl that talks about how much she likes sex and how much she has sex...

This whole part intrigues me and makes me a little uncomfortable, 31 men, Im the 32th. And the thought that Ill never be the only one for her and Im probably isnt now, since she told me she dates many guys at the same time.
Which kind of disappoints me because really besides that, she is really a great person and we get along very well.

Anyways now for the second part, we exchanged phone numbers, and the day after we chatted a little and it seemed pretty good. Now for the day after that didnt really talk besides that I asked if she is free in the next two days (it was thursday) and she replied "Not really, sorry".

I went to the club at friday and she came too, we talked like everything normal, she came in to get her headphones (she really forgot them there) and really didnt stay for that long.

We havent talked for like 3 days now at all. I dont really want to spam her with messages since Im afraid it will be one-sided enthusiasm. Im also worried about her ghosting me, since I had this happen to me a few times in the past.

Guys I really need help about this whole situation, Im kinda confused and worried at the same time but not sure if i should hold on onto her.
Thank you for reading this.

 

Thanks for the replies.

I think ill stay "friends with benefits" with her, just when we want to play around a little bit.
She is really great personality wise, and honestly I dont feel too emotionally invested (not like the past women I had), I guess I matured quite a bit.

I also noticed that Im not so jealous of her too (And I was with other women)
The real question here I think is will I marry her? the answer is no.

 

She told me she is polyamorous before we had sex and even before we kissed. Yes, I knew what I was going into.

But I guess you are right man. It is a real big deal breaker and if I come to think about it more her sleeping around with other men and having other relationships simultaneously puts me lower in her priority list, sometimes she may even ignore me completely while being with another guy.

I guess the reason Im holding onto it so much is because I was pretty much deprived of any romantic experience for two and half years, absolutely zero female touch, and that sucks hard. It made me feel like there was something fundamentally wrong with me, and many times lonely and because of that depressed. I had (and still have) many female friends but nothing ever got out of it.
Every time I tried to take a step further I got ghosted or just rejected.

I wouldnt describe myself as an incel, but as much as I tried to run away from it all the signs were there.
Im not ugly or socially awkward, maybe just short (5'4 or 1.66 m) I work out for 3 years already so I have a pretty muscular build, I practice NoFap, Take cold showers, eat very healthy, work on my hobbies (studying music and playing the guitar).

I think I tried every technique or strategy there is to imagine. You name it, I tried it.
Sadly no results.

It put me into a place of despair kinda, sometimes I felt that all of this self improvement is pointless, its was just tiring.

Of course I did it for myself tho, not for the girls, it made me feel better about myself, yes.
But female touch, attention and care is something I still miss. When I finally got the chance with this girl, even if it has its cons and they are pretty heavy ones... you know...

Im opening up a bit more about my problems here but I hope you understand the situation.
I would like to read your response.