I don't know what to think
Tengo varias maneras de pensar, entonces a veces no sé qué pensar.
I have several ways of thinking, so sometimes I don’t know what to think.
Todavía no sé qué pensar al respecto o lo que puedo decirle a ella.
I still don't know what to think about it or what I can say to her.
— El tiempo contigo (2019)
Le doy vueltas y vueltas y ya no sé qué pensar.
I keep going over it again and again, and I don't know what to think anymore.
— El secreto de sus ojos (2009)
I don't know what to think about him.