Am I overthinking? Update

SO was caught talking to other women on FB and found at another womans house (to my knowledge nothing happened) back in February. I found out by checking his FB via his laptop one night while he was out with a friend. I know I know, I shouldn't be on his FB but I had a gut feeling and had to check it. We decided to stay together and try to work through it. Anyway, said laptop has remained in his vehicle since this situation happened, initially he said it was due to not wanting to pack it for class that he was having for work every day but that has been over for a month now. The last 2 nights he has been off work and laptop has made it's way into the house for some paperwork he had to do for work but today when he left for work the laptop followed. Am I being crazy that I find this suspicious and I'm slightly about to lose my shit?

Update

So I asked him about why the laptop stays in the truck and never comes in, he left mad but he brought it inside because it would "make me feel better". Quick back story, he just got on with the police department and went through months of training that required him to have his own laptop. He told me back in Feb that he was tired of lugging everything in and out of the car so he decided to leave his laptop and class stuff in the car. Found it weird but whatever. He has been out of class for a month or so and on the road where he no longer needs it. So today when I asked about it he told me that it was in there for work, he has powerpoints and notes he could reference if he had questions, and that they use laptops in the patrol cars and if theirs goes down then they could use his. I called BS on all of this. He then proceeded to ask me why it was a big deal, said it wasnt the question he is having an issue with its the insinuations that I'm making, and asked what my big plan was "to go through it while he was at work". Obviously if it's in the house he is gona be super cautious now so I dont find anything so I already know not to be that stupid. I told him my issue is that he didnt start keeping it in the car until everything happened in Feb and now that it's all over it's still in there and he made it a point to take it back out there after using it this week. Told him that I have every reason to question this, and that I dont trust him so if he is taking my question as an insinuation then be my guest and take it that way. Ugh, in trying so hard but I'm just not sure how to trust this man anymore.