What is he looking for?

What does he want? My boyfriend of 2 1/2 years always says he loves me and only me and that he is "WITH ME", but he has been reading books lately like "The Game" from the cheesey mystery pickup artist. But it basically teaches and talks about picking up"chicks", and he also is always trying to look and talk like Christan Troy from Niptuck on FX...who is basically a man , it just makes me think that he is trying to have other women notice him or that he wants other women. I just don't understand. I also see him looking at other girls...but he just denies it and lately I have been keeping my mouth shut even though it hurts bad. I have asked him but he just tells me I am looking into it too much, but am I? He has hidden things from me before. I just need advice, please. I love him and I do not want to loose him, but I dont understand what he wants.