Lying for his own peace?

My boyfriend and I were discussing watching corn 🌽 in the beginning of February. i know there are splited opinions about watching corn in a relationship but for me personally it’s very disturbing to know that my boyfriend of almost 4 years watches other girls in such a scenario. anyways, without further discussion he promised me that he will stop and that he gets my point. In the past month I would random ask him if he watches some and he always told me no. This leads to yesterday when we talked on the phone while he was drunk and we somehow ended on this topic again. He said that he never stopped watching it and kept denying for his own peace. Now I really dont know what to do. It is ridiculous to fight over corn, but i thought after our first talk he was understanding and i trusted him BUT the main point is that he lied to me for so long. Like I didn’t give him an ultimatum for watching it or not - we casually talked about it and he agreed. It bothers me so much that he lied ā€œfor his own peaceā€. I really start doubting now other things he promised me… how can I handle it? Should I talk about it with him or led it be?

Lying for his own peace?
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