Do you think its wrong for a guy to ask you out and then?

do you think its wrong for a guy to ask you out and then you find out hes still talking to his ex girlfriend like what the hell is this guy on he says he wants me and then not even a week of first talking he has his ex girl comment him shes jealous that he has moved on he says he does not know what girl to choose since were both great girl like who the **** says that to a dam girl hes dum *** hell should i just move on now and save the drama for someone else. you do not come at someone and say you like then and then still talk to your old ex. advice what would you do and this guy is like 29 years old