Overthinking ?!

My husband and I had a joint facebook account to keep in touch with out of state family. I gradually stopped getting on it. Hubby took over and friended his friends, co workers, ect. I get on to send message to my sister. I noticed he’s been liking a female coworkers photos. Comments on her posts. No male coworkers. No friends. Just hers. That rubs me the wrong way. Am I overthinking or should I say something to him?

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