You can use Direct Messages (DM) to do this. However, the person you want to DM must be following you.
climb out the window
Yes, you can change your relationship status on facebook without anybody seeing. If you go to the information bar under your profile picture you can check off what you do and dont want people to see, Just unclick relationship status and that will be completley private for you
Donate to charity without anybody seeing
NO
You can stop people from seeing your Instragram without blocking them by changing your privacy settings.
This will be due to your privacy settings. On Twitter, you can prevent anyone seeing your profile by "protecting your tweets". This means you have to approve anyone who wishes to follow you.
Seeing as that's you, you should know your own Twitter account.
No
"Sin verte" = Without seeing you
Yes, he is suppossed to be getting married to Danielle.
¿Ve / ven / ves / veis a alguien?
Without Seeing the Dawn was created in 1947.