2. Pacey needs to be with someone that's sane and can give back to him, what he gives to her. Joey and Pacey did that when they were so called "mortal enemies".
3.Joey always says she needs to find herself and she can't seem to find herself with Dawson. She could find herself with Pacey.
4. Pacey needs someone to match his wits. Joey has proven that over and over again.
5. They could break the cliche of blondes and brunettes are "soul-mates", Pacey and Joey could do that.