I can speak to the culture of live music, not in the OP's geo area specifically, but enough and all over the country that I can speak to this. I see live music frequently, and have for the last 30+ years, in small venues , bars, and stadium venues. I have never seen a musician behave that way towards an audience member. I have witnessed audience members, females, dancing in riske ways and in ways that invite male attention, but I have never witnessed a musician behaving this way.

I agree that this was not an assault. But the OP has had multiple traumatic experiences.

I think the combination of approaching the band before the show and dancing alone up front gave a certain impression: groupie. Perhaps this musician treats all groupies this way, and perhaps that's his way of flirting, who knows. We can only speculate on why he behaved this way.

Also this musician is simply that, a band member. I recall in the thread that the description of this venue is that it was small. So, is this musician truly a "rock star" or celebrity, or simply a local band member who is known in the local music community?

Either way, and I digress. @jesyka, it seems you have learned something valuable from this experience. No, you are not to blame for what happened, but you did remain standing there after he had thrusted his groin at you, indicating that this was Ok with you. I understand freezing and not knowing how to respond in the moment. That can happen to anyone. But you learned that going to a club alone as a female invites a certain kind of impression, and typically it's assumed that you might be there to try and hook up. This assumption can be completely wrong, but that might be the impression that it gives off.

This musician's behavior is not typical. I've never seen a musician throw water on the audience, let alone on a female. That's odd, so is thrusting his groin at her. Not typical. But maybe it's typical for HIM, for this specific genre of music, or is common at this particular club/music venue. Who knows?

As for processing it, I think the one positive to take away is the lesson learned. Be more cautious when going out by yourself and understand and be aware of the impression it can make on others.

The past cannot be changed, we can only change ourselves and our behaviors based on lessons learned. To ruminate on this incident is not very productive. I think if there's a history of bullying and actual assaults, then that should be addressed with a therapist. We are not qualified on here to help in breaking more deeply rooted patterns. That's a therapist's job. We can offer compassion and understanding, along with our perspectives and opinions. But @jesyka, if you want to get to the bottom of this pattern in your life, I suggest working it through with your therapist. A pattern can certainly create repeated trauma, and trauma needs to be dealt with by a professional.