admit, acknowledge, allow in, let in
No admitas nunca que le quieres.
Never admit that you love him.
Nunca admitas que sabes.
Never admit that you know.
— State and Main (2000)
No admitas nada.
Don't admit anything.
Quiero que admitas que quizá te guste un poco Tom.
I want you to admit that maybe you like Tom a little.