Slow does not mean you don't do anything.
Slow means things happen as they happen.
Slow means you don't get emotionally committed right away.
Slow means you don't have sex (or anal sex, depending on who we're dealing with here).
Slow means they don't want to hear you whine about making a commitment on the first half a dozen or so dates.
Slow can also mean that you should enjoy it while you have it, knowing something may come up and it may not last.
Slow is just that; slow.