Where is the line between flirting and harassment?

flirting is fun, as long as it is welcomed. if the person who initiates the flirting is told that it is unwelcome, he/she should stop. If he/she does not, it is harassment.

Flirting is fun but must be fun and acceptable for both people. I enjoy flirting with the women at work and, knowing that I am not going to push it any further than I do, they laugh and it keeps the humour at work up especially when things are not going so well for some of us. But if I ever thought that one of them did not like it, then I would stop immediately with her and around her. That does not mean that I would avoid her, but I would respect her wishes. Going beyond that becomes harassment. Most workplaces now have harassment policies and employee training on harassment. There is no excuse for it anymore.