Dating

A red flag, if My boyfriend likes another girl’s photos? He says he doesn’t know her, but they have many mutual friends on insta?

My now boyfriend, who I noticed has been liking this other girls photos (no bikini photos on profile, but she does on her stories). He liked many of her photos before and even now while we date. I don’t know if he likes her stories. We ran into the girl at a bar and he acted like he didn’t know her, but I noticed she looked at him as if she knew him (might just be me). I then asked him if he knew that girl and he was like no. He said he knows she went to so and so school. I randomly just looked her insta up and saw they have at least 10 mutual friends which are all girls. They didn’t go to hs together and they aren’t going to the same college) is this more? Should I be worried that he is lying or is that really normal for guys to like girls photos and then claim they don’t know them.

Updates
+1 y
They go to the same gym, so I assume they would run into each other.
A red flag, if My boyfriend likes another girl’s photos? He says he doesn’t know her, but they have many mutual friends on insta?
Post Opinion