falling in love??

i know i fell in love with this guy. we both wrote like 80 text messages only in our first week (not seeing each other and not kissed then) and since then 6 weeks passed. 6 weeks of love&passion. his messages make my heart jump from joy or make me have tears if i'm desappointed if i don't see him. he used to call me often from work. talked and wanted to hear my voice. is this generally a sign of falling in love.. or is he just bored and wants to make sure he will see me again?? bad thing is he knows i still can't get away from my ex-boyfriend (contradiction i know - i love him but no more than partner - i know i must break free)
do u think this guy is also falling in love?
he never much talks about his private live, just bout work and friends, family... actually a lot:) but never invited me home. he says himself he's the kind of guy who's enjoying life ..and girls :-O What do i think??? he is very sweet and attentive + at the same time not. tries to keep in the distance & still close