Me n wife r gettin a divorce?

weve been seperated for 3 months we have 2 young kids we still talk she lives wit her dad n stepmom she told me she went on a date last night wit a guy she works wit where still marryed isnt that rong of her to do i need help she says she still cares bout me wat i need to do she told me to back off her a little shes 23 im 33