Ok, you edited the question to make it ever so slightly different, but here is what is going on...
if (bool232 == true)
When that is true, it will start executing inside the if... next is
if (gameTime.TotalGameTime.TotalSeconds >= 3)
Here, if the
TotalGameTime is over 3 seconds, it will execute the next line, which exits your game. This line is not a delay, it just check to see if you have been playing for more than 3 seconds. If you want to delay, you have to so some kind of sleep, like:
System.Threading.Thread.Sleep(3000);
this.Exit();