When do you decide to stop seeing other people and go for one?

Anonymous
Let me clarify. You're single, you're flirting with several people, maybe going on dates with a few, but nothing serious. Maybe you're hooking up with someone, but you both know it's not going to go anywhere. Then you meet someone you think you could have feelings for, but don't know if it'll work either. Still, other people keep asking you out and such. When do you start saying, "No, sorry" because you think you have something real with one person? I don't want to lead anyone on, yet I don't want to turn people down when I don't know where things are going with this one guy. What would you do?
When do you decide to stop seeing other people and go for one?
2 Opinion