What Does Ps In Ps I Love U Mean?

It is post script, and people should not write pss or psss etc.

It should be:

Ps. For post script.
Pps. For post-post script.
Ppps. For post-post-post script!

But really people shouldn't go so far to have that many post-scripts. You leave post-scripts after you have finished your answers.

Ps.
I should have mentioned that Script is short for Manuscript. Its supposed to be used for documents written by hand.

Pps.
I am bored!

PS means "Post Script." It is a way of saying "after the letter was written."

PS nice question
Pps got another one
It's used in business its used in private letters and its means postscript, in other words its and addition to what you said in the main body of your letter - written communication.