How long do you wait until you decide to become exclusive?

It depends on how much time we are spending together, but I would want to know that we were exclusive sometime between about a month and 3 months . I generally prefer for the guy to bring up the topic as to not seem pushy, but if he doesn't I would at some point .

The things that factor into my decision are how long we have known each other, how much time we spend together, how comfortable we are together, have we met each others friends, are we sleeping together, and probably most importantly do a see a future together .