Most Helpful Girl
I think it was wrong. You should work on your trust//jealousy issues so you don't have to reject girls who genuinely like you. I've been on her end of the situation. I can't control how men talk to me. But I can control my reaction which is to ignore them. If she isn't flirting back with them then there's no reason to ruin the chance of a great relationship with her.
Most Helpful Guy
If it was that easy for her to say "ok I understand" and walk away then she didn't really care about you. You don't know what would/could have happend and you will never find out unless you really want to go for her. So you chose? Do you like her or not? If not leave it, if yes then go apologise and talk to her again, you never know.. She could be your future wife or maybe not but you can only find out if you start it :).