Did I do this girl wrong?

I was messing around with a girl who was a bit overweight, she was 145 pounds, 5'9" tall.. well she takes off her shirt and I completely go limp.. she asks me a bunch of stupid questions and I insist that she come back after I watch a and have a few beers, finally I boot her out of my house.. she begins to cry hysterically, yelling and screaming at me. Ok.... srsly.. what was I was supposed to do? Fake it? No. I'm a nice guy and was honest and didn't lead her on.