husband eating out

My husband said he went alone to eat buffet from work during lunch time. Is that weird? I dont know the passwords to his credit cards to see how much he spent there, he says he doesnt know the password and that its only finger print log in. He has never gone out with a coworker(s) i dont know for sure. He used to text his female coworkers (dont if he still does and just deletes it or something). So is it weird that he is saying he went to eat buffet at a restaurant alone? I personally never have gone and ate at a restaurant alone.