My first kiss ever and he kept biting my lips painfully? Also he hid a 4 year long relationship from me?

I feel so upset and confused now. During the kiss, I asked him to be more gentle multiple times, but he ended up coming back to biting me every time. My lips have been hurting for the past 2 days. I had never kissed a boy before. Also he accidentally slipped and revealed a 4 year long relationship that he had never mentioned before (even though he had told me about his "whole" dating history in detail).

Do I have the right to feel so upset? Is it okay for me to dump him? I am genuinely scared. It was my first kiss ever... I had told him before I wanted my first kiss to be gentle, I was also stalked by adult men in the past so I felt like I needed it to be gentle. Now I feel even more traumatised/upset and would really appreciate some kind words.

My first kiss ever and he kept biting my lips painfully? Also he hid a 4 year long relationship from me?
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