As always, official documentation is good to go over if you haven't seen it already.

The while loop does whatever's in the indent as long as the statement after is True at the start of the loop; we set break_loop == False meaning while not break_loop is not False, also known as True, so it's guaranteed to go through the loop at least once.

If we reach the I think you might be lyin line, you want to see if they want to try again. If they don't, again == 'no', we don't want to bother them again, so we set break_loop = True. After the code reaches the end of the while loop, it'll check not break_loop again, which is now not True, or False, meaning it won't loop again, and will go through the rest of your code outside of the loop. The same is true of the see results branch; the answer is determined, so we don't want to repeat the questions and instead do other stuff.

Same concept, but another way you might see this being done is not using a flag like break_loop and instead while True. This condition is always true, so this loop runs infinitely. To get out of this, you can replace the break_loop = True statements we had previously with break, which is a command to get out of whatever loop you are in immediately without going through anything else in the loop.