A balanced schedule is not possible with 14 players, so you must accept some sort of compromise. The schedule below has 15 rounds, where all pairs of players (apart from K&H) partner once. So K and H are the two players who have three byes, while all other players have two byes. Most, but not all, pairs of players oppose twice.
I have assumed you have two players per team, so I hope that is the case.
[(D J):(E M)] [(A L):(C K)] [(G H):(B I)] FN
[(A F):(G J)] [(D E):(H I)] [(B C):(M N)] KL
[(K M):(E H)] [(F I):(J N)] [(B L):(D G)] AC
[(G L):(E N)] [(C H):(J K)] [(B F):(A I)] DM
[(L N):(F M)] [(D H):(C G)] [(I J):(A K)] BE
[(A M):(I N)] [(F G):(C D)] [(K L):(B E)] HJ
[(G K):(I M)] [(D L):(A J)] [(B H):(C E)] FN
[(A H):(L M)] [(C N):(G I)] [(F J):(E K)] BD
[(C M):(A E)] [(I K):(D N)] [(B J):(F L)] GH
[(C L):(B K)] [(A D):(F H)] [(E J):(G N)] IM
[(B M):(D F)] [(J L):(C I)] [(A G):(H N)] EK
[(D K):(A N)] [(E I):(C F)] [(J M):(B G)] HL
[(E L):(D I)] [(H J):(B N)] [(G M):(F K)] AC
[(H M):(I L)] [(A C):(E F)] [(B D):(K N)] GJ
[(F N):(H L)] [(E G):(A B)] [(D M):(C J)] IK
