People suddenly feel uncomfortable when they encounter the embodiment of what they are insecure about, it doesn't matter whether it's about looks, height, weight, wealth, wits, talent, fitness, love; and that's actually the way it should work: when life is sending you the signals that you should work on yourself, just take the hint instead of rationalizing the situation, the faster you become honest with yourself, the faster your life will start unfolding in the right direction.