No, I don't believe I choose conciously to feel these things.
While free will is still something i'm clinging to in many instances, in these, I don't feel they apply.
What we feel when we like or dislike someone is instinct.
The concious part enters into the picture when we try to deny these feelings, change them to suit our curent needs or society's expectations-I have very good first impressions, good and bad, and only when I try to change these feelings conciously does the relationship turn sour. worse than it otherwise might have. Only when I try to overcome fear does it become more difficult to deal with the situation at all. Better to feel the fear, acknowledge it, and then you can deal with it more appropriately.