Ask a Psychiatrist and Get Answers to Mental Health Questions ASAP
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I would have asked you if there was issues in your background if you had not told me about your past. Most people who feel as you do usually have something that hurt them in their past. Having what happened to you brushed under the carpet is very hurtful. It minimizes your pain.
Your partner's arrogance can be hurtful to you. And it could be that you were attracted to him because of this trait. That usually indicates that someone from your past has hurt you in the same way. Being put down or having your partner winning arguments can be a pattern from your past. That is why I put it out there as possibility for you to consider.
Unless you feel safe with your partner, you may not want to share your past. Talking to a therapist first might be a better option. That way, you can sort out your feelings first and know how you feel before you share them.