Liking another girls photo ...?

My man has been more distant with me the last 6 months. He started a new demanding job and I support him. He’s never been one to be super open about his feelings and gets frustrated when I ask if he still loves me like he used to. We have sex maybe once a week if I Initiate it. We have been more like friends it seems. I’ve been trying to get the sparks back and for the last few months I can see he’s putting forth a bit more effort. We are both private, never even asking for each other’s passwords. The other day I noticed he liked a friend of mines post (not close enough of a friend for me to be super comfortable) that he said 3 months ago he didn’t know. Today I asked him to go like my photo and he had to look up my profile (because I wasn’t showing up okay his feed...hmmm, when he posts it’s always the first thing on my timeline) so he goes to the search bar to look up my profile and I see the last profile he looked at was hers..... she’s very pretty and I can’t really help myself from being a little salty about it. I swear I’m not social media crazy, I actually barely go on, and normally idk if I would be bothered by this but today I was. He’s not good at communication. Should I let it go or what? If I approach the topic, how? I need advice please! Am I crazy for feeling this way? TYIA!