How do I get over girlfriend telling me she's been with a guy with a 9 inch dick when I'm 7inch?

Anonymous
I've been dating a girl for 9 months and one day we were messing around and I asked her if she liked my dick and she said yea it's perfect. I said is it the biggest you have had and she said no. She didn't feel comfortable talking about it or her past but I kept asking. I know now that this was wrong but I was just curious and my ego got in the way. Later on she told me it was 9 inch. She tells me she didn't like it or the guy and doesn't like to think about him. She tells me I'm the best she's had and my size is perfect for her. But everytime I ask her if she likes it or if she's satisfied with me and she gets annoyed and I'm worried I'm coming across insecure. I guess maybe I an a little but I just want to be the best for her and it bothers my imagining her take a 9 inch dick when I'm 7 inches.

Any thoughts?
How do I get over girlfriend telling me she's been with a guy with a 9 inch dick when I'm 7inch?
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