I want to improve my social skills towards the opposite sex

hello there! the name's derek. Recently, i was dumped by girl. she didn't reject me directly but became subtle in saying it. i.e. using facebook, she have sent me messages(not personal messages)that i figured out what she meant. i thought i had it in the bag, but i didn't.i wish to make her feel that she lost something very REAL because i genuinely like her. and with this community , i aim to become better in getting girls to like me, zero percent rejection.