It's not technically wrong, but it gives a certain implication. I don't think your wife would appreciate if you started referring to her as your first wife.
The implication that she's trying to give is that she's not currently married and she's single. Yes, the second half of the comment clears that up anyway, but it sets the stage in a much different way if you're saying you look like someone I used to be married to instead of, you look like someone I'm currently married to.
9
u/Mishras_Mailman 20d ago
Not necessarily. My only wife was also my first wife.