How would you go about this?

You've been married for almost 25 years, you leave for a week to see your sickly parents and when you come back you find a receipt to a restraunt. Dinner for two, Friday night at 11:30, strawberry salad and a steak. (Your husband's allergic to strawberries so he wasn't alone). You question him and he refuses to tell you who he was with, this sparks an argument and he gives you the cold shoulder for a week.

Would you keep questioning, forget about it becuase he could've been with a friend, call restraunt and talk to the server (it's been a week and she might not remember that night) or leave?