Screw what she thinks. Don’t let some chick dictate how you feel about yourself.
I can relate to how you feel though. Before I started PE, I would push girls away before I got too close to them, because I was insecure about my size. Til this day, I’m not sure if I regret it or not. I missed some good opportunities, but did I save myself some ridicule? Who knows.
At your current size, you have nothing to worry about. 7.25 x 5 nbp, is no where near small.
My ex gf, who knows about PE and has seen my before and a little under my current size, asked what size I was up to now. I said 8”. She then said “Oh, so you’ve gained 5 inches?” LOL. I got a good laugh out of that, and thought nothing more of it. She was just kidding.
Never let someone else bring you down. Just turn that negative into a positive, and use it for motivation for what YOU want.