I want you to tell me about it
About is a difficult on in Spanish. Someone has a problem and you want them to talk to you about it
3 Answers
Cuentame de tu problema.
Quiero que dígamelo.
Dime lo que está mal.
Quiero saber lo que pasó.
Don't try to translate all the words literally, languages are so different, since I don't feel spanish as english or my native language, the structure sometimes seems strange to me, but use more translator and read more, there's always lots of ways saying the same thing.
Quiero que hables sobrelo.