Why are men dating old-fashioned, traditional women if they don't plan on respecting her wishes?

My boyfriend and I've been dating (separately, I do not live with him) for 7 months. Yesterday was the 3rd time he kept pressuring me to move in with him. He has pressured for sex twice too and twice I said no.

Flashback:

During our 1st-2nd week of knowing each other (before we became boyfriend and girlfriend) he knew what the deal was with me. The rules were no sex until marriage, no living together until engaged at least and I'm doing it both for myself and religious purposes. Then I specifically asked him if he's really sure he can handle all this because if not, he can walk away and not waste our time. He said yes.

Now he's trying to changing the whole established rules and clearly not respecting my wishes. I've seen this happening. My best friend also has my same mindset and she had the same issue with two previous men too. They pretended to respect her wishes but then ended up pressuring for sex or to move in with him.

I don't understand. Why are men dating old-fashioned, traditional women if they have no intention of respecting her wishes?

Updates
9 mo
I've asked him more than once if he was ok with the deal and he said yes in the beginning but now he wants to change the whole agreement, trying to pressure me into something I don't want.
Why are men dating old-fashioned, traditional women if they don't plan on respecting her wishes?
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