One of my friend always helps me but does not want me to know that he helps me. Is there a word or phrase to describe this secret helping?
Also, if someone wanted to thank the secret helper, is there an expression to do so? The expression that comes to mind is
Thank you for always helping me silently.
But seems this expression does not seem as if it would be used by a native speaker. I have also come up with some expressions like
- Thank you for always helping me in the background
- Thank you for always helping me under the hood
Are either of these acceptable? Is there a even better expression?