Conflict after 3 months

[Rainman4707]

I (bf 31) have met this girl (27) 3 months ago. There was a big chemistry since day one and we started dating. She is giving, caring, generous but has a strong personnality. After a couple of weeks of dating, she seemed so enthusiastic about the relationship that she was texting all day long, showing a lot serious interest and care. I felt she wanted me part of her life. She also started to introduce me to her friends. I tried to manage to see her not more than 2 times a week.
Things were going really smooth until recently.

3 weeks ago, she told me about going to this party that is organised by one of her friends at a bar, but she did not invite me.
Eventually, she went there without me and called me from there to see what I'm doing that night. I said I was out with some friends. And I asked why she did not invite me. She said that I am welcome if I wanted to join her. I said no it's too late because she did not want me there in the first place.

At the end of the night, she called me at 2am to say that she got home.

The following days, I did not contact her. And she did not try to reach out neither. Now, we're going into the third week without contact.

What do you think about this situation ? Do I need to contact her to discuss the situation or do I wait for her call knowing that if she's not reaching out, I would just accept that it is over.

Sorry if this sounds harsh, but why do you care if she invited you are not. You telling her that, tells her you're butthurt (major dry up of her *****)
Maybe she didn't want you at the party, yourself aren't joined at the hip. She can do things by HERSELF.