Name one weird thing that your ex did that you brushed it off but now you realize it’s kind of weird

ever time someone would stop us or would tell him things like: your gf is really pretty you’re one lucky guy he would always get defensive and say well im not bad looking myself. Like this old lady once told us: you’re gf is gorgeous you’re very lucky. He answered in an annoyed tone: why you’re saying that? Are you calling me ugly? That poor lady was so confused. She answered no but her beauty is very noticeable she stands out that’s all. He looked at her and rolled his eyes and ignored her.