You valued her more than u valued yourself, you put her happiness before urs, here u are taking her out and still have to make conversation, make her feel happy, safe and more.
You don't know if she has an std, her ideals on life, or any other information that would actually benefit u and yet u jumped out the gate spending and putting out while she just relaxed and received all that affection with no effort.
Learn from this and value yourself, she is just another piece of ass, don't put her on a pedestal, whether u take a girl out or not, she is going to be who she is, try to spend the least amount of effort as possible.
Life is hard enough already as it is, the women that come in ur life or anybody for that matter are supposed to supplement and make ur life a little bit easier as u do theirs, I shouldn't have to say all this, the examples are there, u have to apply them to ur life otherwise u will keep repeating the same things.