If a seedless melon has no seeds, then how do they make MORE seedless melons???? (please answer!!!!!)????

If a seedless melon (ex. watermelon) has no seeds, then how is it possible to make more of them? And if they make more of them, since it's a fruit, seeds probably have to be involved, so technically it's not even seedless! So how do they make more of them if there are no seeds, and if there ARE seeds, why did the people growing the produce lie to us????