Your twenties go by fast. They go by so fast, in fact, that you may not notice the changes that occur in your dating behaviours as you prepare to become a poor, poor old man. (Because let’s face it, we all know it’s over once you hit 30. Woe is us.) Balderdash, you say? Perhaps you should take a look at this list and see what resonates. Don’t get upset now. You were a dumb kid in your early 20s, anyway.