I gotta say. I have certainly been in your position before. I have dreaded the kiss. But on paper the person didn’t even check all my boxes.
I do really think son is on to something . Your recent love interests I believe you knew weren’t going to be long term. You had the young unemployed dude ( Jack?) that moved in with you. You did always mention how you didn’t see the long term. You knew he wasn’t the one you would grow old with, but he was lots of fun and things were passionate. TDH came with his share of drama . The other ones you really liked were unattainable: very distant and avoidant.
Now you have a guy that seems ideal it might feel “boring”? Or maybe just scary. And that might just be causing you not to rush in and hold back a little. Which is totally normal.
I’m in the date 3 camp. Maybe something to up the romance a little . It just takes longer than 2 dates sometimes! Longer lasting is built. Usually things that spark up fizzle fast.