My girlfriend says I do not meet her expectations

I am a 26-year-old man who recently found out that my girlfriend of two years has not been honest with me. Recently, after making love, she confessed that I was not meeting her expectations.

What really bothers me is that after two years, this is just coming out. I wondered if she had been faking it all this time.

I began to question many things, including whether I'm big enough, and my self-confidence has taken a dive. I know that sex is not the most important part of a relationship, but it is not the least important either.

She has told me that she has only been with two other men, but I'm even questioning that now. Or maybe her lack of experience and the way society portrays sex caused her to develop higher than normal expectations. What do you suggest?