Message on my husbands phone

We had went out to a concert last night and I saw a message on his phone from a girl saying "I know your wife is here but I want to see you come look for me" . I wasn't sure of what to make out if it. I confronted him but of coarse he claims that she is a friend of a family and he did not know why she message him that. I'm not satisfied with his answer and I don't know what to make out of it. Please help me think clear on this . Thank you.