I have read (and i don't have sources or references, so bear with me, lol) that men "fall in love" quicker than women- but it takes longer for the real bonding to take place. when people first meet, their passions are aroused and its really intense and can be overwhelming. it eventually cools down (and it has to- because our systems couldn't handle a long, extended period of that intensity!). so right now, it could be his passionate side talking- it takes longer for long-term love to really set in. i wish you good luck!!!