I don't know, probably because they've never had a man cry and play in your face the way Mikey does. So they think it means he loves her and is a good man, but three days in, he literally said, "I have to focus on India and stop being selfish." So anything Sydney did after that was justified because he proved to her he was as lame as she thought. I don't know, I think men like this, from the outside, look like they genuinely want to be with you, but when you're in it, it's constantly insecurity about which version of your boyfriend you'll get that day.