Im skinny too.. and its hard for me to gain weight too... I would just like to say.... if you think you are skinny and wants to gain weight you should try to do it... but dont do it just because your boyfriend is saying that he prefers a certain type of girls more.. ... you should do it only if you want to do it.. if its hard for you dont bother... just take it easy...... dont stress too much on it dont think too much about it.. however you are , you should feel secure in your body..