It's the fucking questions mark!!

read these, in your head

-hey, what's up

-hey, what's up?

which one sounds like you're seeking approval, which one do you read in your head with an inflection at the end. It's the question mark, it makes you sound needy in her head.

I don't use them at all in my texts, but It's ok to use them sparingly, just be careful with question marks.