Would you be mad if your wife texed her ex-BF just to say hi?

in a since yes but also you got to think do they have kids together did they end mutualy as friends an also you got to remeber they spent a time in there life as a couple an allways gona be memories she may just have wanted to make sure he was ok as a friend but tell her how you feel politely an also that it upsets you but do not acuse of cheating or pry into her business if she wants him back nothin you can do but be there for her