I feel like he has been a little distant recently, should I tell him?

I’ve been in a situationship with this man for about 3 months now and I noticed the other day that he added a girl on Instagram and Facebook and has been liking her recent Instagram pictures (started July 9). I’ve also noticed his communication has been slower with me. He still sends good morning texts every morning and calls and FaceTimes me and wants to hang out but is it a red flag that he’s liking someone else’s pictures that he just added?

I know I’m insecure and a little crazy from noticing this but should I ask him if he’s ok and tell him I feel like he’s been a little distant lately?
I feel like he has been a little distant recently, should I tell him?
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