<human>: As the title says, I've been dating my girlfriend for 1year now, knowing each other for 8 years. She's everything I need in a woman and I am extremely happy. Now one of the issues I face sometimes is that she gets upset about my sexual history.

We've both had a few partners before we got together and that's fine the issue is that she had never performed oral sex on anyone (confirmed with old texts and her reasoning was sound when she explained it to me). Now she does perform it on me and seems to get off from it a lot but it doesn't happen too often.

I on the other hand have performed oral sex on a bunch of my partners and my girlfriend is disgusted by it saying that I'm disgusting for doing it. I've tried explaining it to her that it was in the past and that whatever we both did with our past partners shouldn't affect how we see each other now. She does enjoy a lot when I do it to her too.

I need some help on what to say to her so she's not disgusted with me because of what I did in the past. This is a huge deal for her and actually is the only cause of fights that we have, I do not mind working through this issue with her and need some advice, please help

Can you succinctly summarize the text in 1-3 sentences?
<bot>: girlfriend hates that I've gone down on girls before and is disgusted by me sometimes. What can I do or say to get her to see it as something in the past that shouldn't affect her perception of me now?