Boyfriend trouble.. infatuation to boredom

my boyfriend and i have only been dating about two months now. we didnt realize it when it was happening but for the first month and a half or so i guess we must have been pretty infatuated with each other. just the sight of him made me instantly happy and i loved being with him nonstop. i dont really know what happened, but recently he just seems kind of bored with me. whether its texting, or were eating dinner, or doing anything. ive confronted him about it and he says that isnt the case but i know something is different. im starting to feel that maybe i dont know him as well as i thought.. any advice?