I feel relief when I spend time alone away from my partner :(

To elaborate, I love my partner very much. He’s a kind, understanding, funny, wonderful human. But lately I’m relieved when we spend time apart. We live together so I mean in the sense that I do my own thing in the house and he does his own thing in the house. I have a hunch this is because whenever we are together as of late I read into everything, I compare us to other couples, I’m constantly questioning if I’m really happy or he’s really happy. All of pretty typical rocd questions are plaguing me from the moment i wake up to the moment i go to sleep. My question is how can I try and stop this? I just want to be happy spending time with my partner and i cant help but feel like maybe we just arent clicking anymore :(