s3x life :/

my boyfriend and I have been together for almost a year now and we dont get intimate with each other nearly as much as we did when we first started dating. I’ve brought it up and he tells me he’s too tired after work but we don’t even have it on his days off and still says he’s tired...is it normal for him to lose his sex drive after a while of being together or is he just not attracted to me in that way anymore? :/