LF duo partner im S5 going on S4

ive been grinding for 2 weeks and a half and I went from Bronze 3 to Silver 5. in almost every promo to a new rank it took me about 2-3 times to move up when I solo.. when I was duo queing with my friend it makes getting through promos easier... btw im looking for a duo partner who doesn't bullshit around and is eager to win.