Is it true that the spoilers say the N and S would be together in season 3. Where can I find these spoilers? Pleasa link if tu can.

THEY ARE NOT GETTING TOGETHER TRUST ME THE PEOPLE WHO dicho THAT ARE LYING. (it's a fantasy)

I haven't seen ANY NS spoilers for S3.
Plus it's already been confirmed that Nate will have a new girlfriend

"And tu thought Nate Archibald was privileged before.
Sources confirmar that Joanna Garcia, estrella of The CW's axed-too-soon Privileged, has booked a four-episode arc on Gossip Girl as a amor interest for Chace Crawford's affluent alter ego.
Garcia will play Bree Buckley, an irreverent, slightly evil Miss America-type who hails from a conservative Southern family. She'll first appear in the Sept. 14 season premiere.
apoyar to The CW for knowing a good thing when they see it!"

From Ausiello

Well, now we are on season 3. We see that Nate has feelings for Serena, but she chose Trip. Now, she broke up with Trip, and when he wanted to see her in the hospital, Nate dicho to him to stay away from her. Then he went to see Serena. So maybe, there will be something. Fingers crossed. I can't wait for the siguiente episode, but it's so far away :(