The implication is that you know the next part of the sentence but keep it unwritten. The best exemple is when making a list, a, b c …

Sometimes it’s even just a indicator there’s gonna be a next part, like the “We need to talk…”

Although the more degenerate use is to imply the “you know what i mean/imply”, a bit like the english innit in some sens.

Using ellipses in the middle of a sentence is considered very rude.

Have you ever met someone who pauses in the middle of a sentence… just to fuck with you by injecting pointless suspense? Well, believe it or not… this is what ellipses communicate in written English. You’re building a lot of dramatic suspense and slowing down the pace at which people read your messages… and if you don’t pay it off… you seem like an asshole.

I don’t watch much reality television, but those shows like to inject massive pauses right before the judge reveals whether the chef made a good meal… just so they’ll gasp more and cry with relief and the audience will stay invested. But I hate it! It’s really annoying! And it’s how some people type.

It’s so liberating to use short sentences. You’re writing a paragraph on a page. The reader is going to know that they all relate closely to each other. Make every clause a sentence! It’s fine!