I don't know what to do!

Thanks so much for the responses. How should I handle this. He said his hair gel is missing more everytime he opens it and I'm at a loss for words... I don't even go in his bathroom. I've stopped hanging out with anyone that made him feel like I was cheating as well. I can't prove that he is cheating but it makes me feel disgusting that he accuses me of sleeping around. My sex drive has been low lately because of weight gain and this bs on top. He insists that I'm sleeping with someone else, they are using his hair gel? All I can do is laugh... I play candy crush and spend most days at home :/