Where to go from this?

During a party recently, my girlfriend began going through my text messages. I don’t delete messages, I have texts from decades ago still on my phone including the texts from girl whom I had previously been on dates with. I remained friendly with them because she was a fairly large reason for getting into religion and going to college for my bachelors, my girlfriend doesn’t know this however just that I texted her about 2 weeks after we began to date.

following her finding the conversation I took the phone back from her as I was worried that she would begin to get very upset while we were surrounded by her family. This was towards the end of the party but before we left we sat on a couch and she continued to call me a whore. It should be noted that it’s not unlike her to do that as a joke, but the more she did it I don’t think it was a joke. As we left the party I gave her my phone to check again which she refused to take saying ‘ i already know that you were texting other girls after we were dating’ or something similar to that. We took a short drive back to her house where she explained to me that ‘I should have known that it would hurt her’ which I tried to say that to me it was just texting a friend.

at her house we argued and she began to mention how she wished she knew that I wasn’t a virgin before dating her and especially before we had sex where I took her virginity. I asked her why and she stated that she believed it could have changed things. She stated that I was being whoreish and should have told her I wasn’t a virgin which I stated that she never had asked me and that I wouldn’t just randomly say I had been with another girl to which she argued against.

Anyways, where should I go from this. We haven’t talked about the fight since then and I’m incredibly tired. I want to keep the relationship as it’s been my longest, just shy of a year, and we’re very similar but I don’t know how or where I could improve other than the obvious.

Updates
7 mo
Context

About 11 month relationship

The texts were discussing the death of the Jonas brother

my previous experience happened immediately after getting out of another relationship that ended very messily. It was a hookup where I felt nothing, never finished, and after she left I forced myself to puke twice and scratched myself till I bled. I would have told her had she asked. I just don’t like to talk about it or think about it.
Where to go from this?
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