I agree. moments of weakness are very much a thing. I just think everyone is personally responsible for them! My partner doesn’t go over to Megan’s house after we have a big fight and if he were to say he was, I certainly would object unless there was a real reason. Similarly, when my partner and I were going through a really hard time a few months back (and almost broke up), he confided in me that he almost cheated, not with his friend but someone else. He knew he was in a more vulnerable position and did not put himself in situations where he would act on those moments of weakness, which everyone absolutely has the right to have. I didn’t ask him to do this, he self-reflected and did it himself.
In past relationships, I have had my fair share of moments of weakness. But I think at the end of the day, if I know I am feeling angry towards my partner or not in love (let alone “in like”), it is on me to safeguard myself against actions a less vulnerable me would disapprove of.