lead on
US /liːd ɑːn/
UK /liːd ɑːn/

1.
engañar, dar falsas esperanzas
to encourage someone to believe or expect something that is false or will not happen
:
•
He didn't want to lead her on, so he told her he wasn't interested.
No quería engañarla, así que le dijo que no estaba interesado.
•
She felt like he was leading her on with his promises.
Ella sentía que él la estaba engañando con sus promesas.