Strange, but goodbye

So I saw Gomez at Smith & Wollensky's and as usual sat at the bar. I like being with her and I always have a good time. Somehow the sex thing didn't go so well tonight. Not her fault. Don't know what the heck happened. And on the drive back there was total uncomfortable silence in her car, to the point I had to tell her not to worry about it. We exchanged a lame goodnight kiss and she made the comment 'you can't wait to get out of here!'.
Will not be seeing her again. Once the sex things goes bad, my body and mind are telling me it's over. But what's strange is that I like her a lot, and she is fun to be around. Weird situation and I am very angry and saddened. After the 3rd date, this one didn't work for me.