Bae or nay?

These past days my boyfriend is receiving a lot of "😘😻😻😻 " under his instagram pictures and they are all from girls. I told him to delete them and he didnt, should I be worried? Plus i saw his Dm and all girls just texting him stuff, but he doesnt reply! Gladly, at the end of the day Im still the only gurl who he sleeps with and gets in his pants ☺️