Well, Serena confesses her प्यार for Nate at the last book, but Nate texts both her and Blair that he's going sailing या something (meaning he won't तारीख, दिनांक either of them). So basically, Serena ends up with no one (definately not Dan since their relationship lasted about one and a half books). But the new book "I Will Always प्यार You" is coming out this November. Only then will we know who Serena will be with. It could be Nate या it could be a new character. Who really knows. I guess the real answer is that we'll have to wait until the अगला book comes out to see what happens then.