Difference between "I miss you" and "I miss u."

madmisskelly
Is there a difference between those two and others-

'Miss u"

"Miss you 2"

"Thinking of u"

Is shorthand texting less serious than them saying "I miss you" "thinking of you" and others?

What about you men who do this, what do you mean when you type it this way?
Difference between "I miss you" and "I miss u."
10 Opinion