Most Helpful Girl
yes it is usual normally when you break up with someone its because you want to see them as happy as possible and your afraid you can't do that so when they fall for someone else and then gets dumped you get emotional for them because you want to see them happy too. Although i guess sometimes you dump them because they are idiots too, but no its not unusual to feel that way.
Most Helpful Guy
So then invite her out for dinner and cheer her up. Friends for friends.