There is no deliberate alienation, just careful distance, don't get closer, don't want to get closer. We are people from different worlds. I don't want to tell you my deepest secrets one day, and look at your surprised expression and take out a magic potion to erase your memory.
I just want a distance between us, not as far away as a stranger, not as close as a lover, classmates - the best distance - as wide as an aisle.