My FP/SO was with his friends yesterday day drinking and having "guy time." I'm absolutely fine with this and I was glad to spend some time with my friends as well, but I called him this morning and he said he hadn't been to bed yet. 

For some reason, my brain is convinced that because he hasn't gone to bed, he had girls over and slept with them and he just took my call so I wouldn't get suspicious or find out about it. I'm also now wildly overthinking the fact that he wanted a day with his friends and didn't want me there. My brain can't stop spinning and I know it's based on nothing rational but I can't stop. Help.