Do I need sex to have love?

My boyfriend and I have recently hit our one year mark. Thinks have definitely died down in bed. We used to have sex every day, but down its come down to only a couple days a week, if that! He's the only man I've ever been with so I don't know if this is a normal thing to happen. I have a very high sex drive and it's just been making me very frustrated, and sadly depressed. It makes me feel like he doesn't find me as attractive as he used to. Or perhaps doesn't love me as much anymore. He often tells me he's just to tired. He does work a lot, but so do I. Feeling like I have to beg for sex from my boyfriend makes me feel like crap, and I don't know what to do.... PLEASE! Any advice or tips is greatly appreciate!!💜