I find it difficult to make eye contact when I am upset or uncomfortable in a situation. When I know I need to make eye contact, I feel as though I'm staring, as several times while we are speaking, the person will look away. I'm not sure of the amount of eye contact vs. looking around there should be.
I will be affectionate towards a select few people, but even then I have to be the one initiating the contact or I feel uncomfortable. The initial contact is always startling, but there are two people that when I find out who it is, the comfort of their touch outweighs the initial startle.