Д365
ДУША В ДУШУ жить (с кем)
collInvaradvif there is no prep obj,
subj: pi
fixed WO (two or more persons live) peacefully, happily, in complete agreement, fully understanding each other
X и Y (X с Y-ом) живут душа в душу ' X and Y live in complete (perfect) harmony
X and Y get on (along) beautifullyX and Y live on the best of terms(of a couple) X and Y live like two lovebirds.