Is it ok that my boyfriend always smile at random girls?

Anonymous
So we're together for a month and I start introducing him to my girl friends. I had 5 of them pulled me aside and told me they know my boyfriend. I asked how and they said he always smile at them in class (they never talk yet just smiling at each other). Well those 5 girls don't know each other so they aren't trolling me. I know my bf because he used to smile at me in class when we were still strangers and one day he approached me. Should I be worry about this? He even smiles at my bestfriend (he didn't know she's my friend). Should I be ok with this or we need to talk? It was just smiling nothing else.
Is it ok that my boyfriend always smile at random girls?
5 Opinion