How do I get him in the mood?

Hey ladies. How do you get your guys all worked up and I'm the mood? I feel like my boyfriend just isn't into it anymore or something. I try like every day.. no joke.. to get him in the mood, but he'll turn the other way or get up and leave the room or just stop kissing me etc.. Idk if he just isn't into me anymore or what.. but lately, he never wants to have sex and it's kind of worrying me.. how do I get him in the mood or why do you think he's acting this way?