Second time the charm?

So there is this Leo guy that I have the biggest crush on. He used to visit me a lot at my job and say hi. Then one day, he said how he liked that we were friends and wanted to see where we went from there. Since then, we have been hanging out and texting. When we hang out, we talk. Nothing sexual or explicit...we actually get to know each other. We kiss and he gives me the most affectionate hugs. He's so romantic. He holds my hands, caresses me face, and always puts his arms around me. I wonder if this is too good to be true, because I have been burned badly by a Leo. However, my new Leo calls me beautiful, laughs at my jokes, and likes how I am a hard worker. There is so much to say but already he's hinting getting serious and being in a relationship. He has the same views as me on things and we both have built a lot of respect for each other. How will I know if this Leo is the one? How will I know this Leo is genuine and really cares?