carry a torch for

US /ˈkæri ə tɔːrtʃ fɔːr/
UK /ˈkæri ə tɔːrtʃ fɔːr/
"carry a torch for" picture
1.

sentir algo por, estar enamorado de (sin ser correspondido)

to have strong feelings of love for someone, especially someone who does not feel the same way about you

:
He still carries a torch for his ex-girlfriend, even though she's married now.
Él todavía siente algo por su ex-novia, aunque ella ya está casada.
She's been carrying a torch for him since high school, but he never noticed.
Ella ha estado enamorada de él desde la secundaria, pero él nunca se dio cuenta.