Why do I like him?

This guy (23m) and I (27f) were just friends, but I agreed to go out with him and tho I initially wasn't into him, I found myself really liking him after the first date itself.

He's very respectful and besides glancing over at me and sometimes brushing arm against mine, he'd refrain from touching me. He started speaking about marriage on the first date and asked if he could meet my family but not in a pushy/desperate way - he respects my space and makes sure I feel comfortable. I felt I could really open up to him and even told him about my insecurities. The first date was 5 hours, however after realising our political differences, we knew it wouldn't work and ended it. He even stopped being friends as he thinks it's awkward but altho it's been a week, I still seem to miss something about him.

Why do I like him?
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