Steelxander I am going to have to agree with reconzero
Skill also does not have to due with how new an account is or how new a player is to this game.
How many level 1-50 accounts "Smurf's are out there mopping the field? Until they get properly sorted out by the SBMM and then matched properly vs Preds, a lot of them, I see them all the time.
Skill is dependent on multiple factors, placement, damage, kills, assists, wins etc. not on level.
If you and your "new" friend is doing very well then you will be pitted against better and better players. Plus as Recon mentioned even if they are not doing well but you are, you will be the cause of them being matched with better players as well.
SBMM in that case would be working just fine.