I don't think having power over someone is fine. What you have to do is having power over yourself. I mean, better your confidence, your self-steem, improve your social ability, use your good qualities to make yourself and others happy.

I understand what you say about playing with girls. I guess it's like a child who is learning through games, experimenting how adults react to him/her when (s)he acts in a certain way. It's normal bc you are very young. Don't blame yourself for this.

Do you think that if you see your coworker is into you, you are going to lose interest in her?