Whoa whoa whoa, there is much more than this to take into account.
When you first meet someone it's usually because you fancy them and even lust after them. I really don't believe you 'fall in love' at first sight. You fall in love with someone when you get to know them and you find yourself thinking about them all the time and can't bear to be apart from them.
After a certain time, you still want to be with this person because you still love them and you get on together well and enjoy being together.
Many many years down the track you might find you have nothing in common with this person and you have little to say to each other and sometimes you decide to part.
Even so, you can still love this person, but it's a different type of love.
So please don't pay too much attention to your boyfriend saying he's not 'in love' with you.If you still enjoy being together and he treats you good then maybe this is just the next step in your relationship.