BrookLynn, I'm happy to hear about the guy you met. Congratulations to both of you. I hope it works out for you both.
In regard to your question: I believe that sometimes, two people meet, and just click. Even if one of them is on guard, as you say you are, or has had a bad experience in the past, there are just certain people that even those who are on guard feel comfortable with. Apparently, things that both of you said, and especially that he said, during your conversation, caused you to feel comfortable. As to your question of "What's happening". My answer to that would be that the first seeds of trust are being built between you and your gentleman friend, hopefully on the way to a greater building of trust and bond.
Good Luck to both of you. I hope it works out for you.

Mitch