My girlfriend told me she prefers big penises. Now I’m worried I won’t satisfy her

The writer has been seeing a woman for almost a year, whom they met online, and they've had a number of phone calls before meeting in person. During these calls, the woman became very sexual and asked about the writer's penis size, which is slightly above average. She then mentioned that she liked big penises and that an ex-partner's was 12 inches long, making the writer feel insecure. The woman downplayed the comment, saying it was just a preference, but the issue has continued to resurface. Despite not having penetrative sex yet, they do engage in other forms of intimacy, and the woman says the writer is the best in this regard. However, penetrative sex is important to the writer, and the woman's comment has left them feeling devastated. The woman has apologized for her remark, but it hasn't helped to alleviate the writer's insecurities. The writer is torn between their strong feelings for the woman and the urge to walk away due to the lingering issue. The woman claims not to understand why she made the original comment, but it continues to haunt the writer. The writer is unsure of what to do, feeling stuck between their emotions and the hurt caused by the woman's words.