
Although it's obvious the second ml is an obsessive psycho I also think that fl didn't set the boundaries well. She knew he liked her a lot yet she stayed with him when he was drunk , gave him the passcode to her house and unintentionally led him on. Ig since he was the only man around her he thought eventually she would be his.
Although fl seems unbothered by him and even went as far as choosing a perfect future wife Candidate for second ml, she definitely didn't set those boundaries well.
Now he's actually like a tick and it's gonna be so hard to get him to back off