Husband and food habits

Me and my husband have been practicing vegetarian diet for the last 4 to 5 years. We have been away from family all this time. He went to meet his mom this weekend after 5 years. His family knows that we are vegetarian. Still they cooked non vegetarian dishes for him. I didnt know this. He decides to become a non vegetarian and eats at his home. And then tells he is going to be a non vegetarian going forward. Tells me this after coming back to our home. Somehow this did not sit well with me. I somehow feel bad about this. Exactly like betrayal. Am I overreacting? Should i be thinking about it as , its his life and his choices? I am confused.