Lose track of
Meaning: not to know where someone or something is
Example: I lost track of him years ago.
Π‘Π΅ΡΠΈΠ°Π»Ρ ΠΈ ΡΠΈΠ»ΡΠΌΡ Π½Π° Π°Π½Π³Π»ΠΈΠΉΡΠΊΠΎΠΌ Ρ ΡΡΠ±ΡΠΈΡΡΠ°ΠΌΠΈ. +1 ΠΠ΅ΡΡΡ Π² ΠΏΠΎΠ΄Π°ΡΠΎΠΊ π
Example: I lost track of him years ago.