Either he's not in the mindset for a relationship with anyone, or he's not fallen for you, you're not the "one" (in spite of the positive things he's said and his evident enjoyment of your company), sorry.
Mrs Terry makes the good point that you can be attracted to someone to some extent, get on like a house on fire with them etc but just not fall for them/be capable of falling for them. Weird but true.
I actually think that someone who's very relaxed, open, demonstrative etc in their interaction (esp when not in a long term relationship) is someone who's not in awe or in love ... Until it becomes v long-term people who are in love (or capable of being)with someone are often more tense, anxious, self conscious, nervous, a bit guarded etc. .. because their feelings are engaged and are vulnerable. He doesn't sound like he's acting like that, in fact he sounds the opposite. So it may seem positive but it's actually a sign that he's not really emotionally engaged.
Likewise a guy who.gad feelings and who wanted not to put you off or risk you not seeing him and wanted it to go somewhere; would never tell you about other women he has in the go.
He's been quite plain, in spite of the "counting down with regret" thing he's done, telling you're he enjoys your company etc. - that he doesn't want a serious relationship with you a f that probably won't change.
I'd stop seeing him and shagging him, this is it going to end in (your) tears