Picture comments from other girls

I was on a social site and I was looking at some of my boyfriends profile pictures. I read some of the comments from these two girls and they said, luking cute babe wish I was there with u . I love you babe , luk at my man luking sexii like always ,I own this pic babe and luking gud like always keep it up babe I love you so much ,luk at my man trying to be cute jk babe you are cute I own this is my man I love you babe just to name a few. I don’t actually know these girls. But one of them my boyfriend said was just his friend. It’s been making me really paranoid but I haven’t said anything to him because I don’t want him to think I’m a psycho a social site stalker I mean I was just looking at his pictures. Is this something I should be worrying about or does it even matter? And should I ask him about it?