I need help understanding my emotions?

So I fell for this guy, and recently found out that he was leading me on the whole time. He never truly had any interest in me beyond sexual attraction and it broke my heart. Now, I feel confused, because I feel sad, but also I feel resentment towards him. I do not want a future with him anymore, and I want him to feel the pain I've felt.

Was I in love with the idea of him? Of who he could be for me, while subconsciously knowing he wasn't that person? Because when I realized who he truly was, I started thinking "I would never love someone like that, who leads girls on and plays with their feelings"

So who did I love? Did I love who I thought he was, and therefore I now hate who he truly is?

I need help understanding these rocky emotions within myself.
I need help understanding my emotions?
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