The other day, I was out in the garden. Then I looked at the Alusta lilies. Then for some reason, one stem is extremely close to its neighboring stem. The crazy thing is that I planted it like about 6 inches away and I planted the bulb. upright. Any reason for this?

Please post your question in the Lily Forum. I am not even sure what you are asking, could it be that one of the original bulbs multiplied and the new bulb grew a stem?
I don't grow this or even own many liliums (enlarge my image to see caption of where this photo came from)

Some lily flowers can be 6 inches across so it's no surprise that two bulbs have produced stems close together...