No he does not. This is obvious in the first scene we see Sora where he is confused about the entry in the journal to "thank Namine." None of the characters understand why they need to think her. Now, some may speculate that Roxas being a part of Sora would remember her because of his interaction with Namine during the prologue. However, this can be contradicted by the fact that the Twilight Town in the prologue is not the real Twilight Town. It is a computer re-creation of the town. All of the events that occur in the town really did happen, but it was used as a way to show Sora's memories being rebuilt from another side. Because, if Sora lost his memories, then Roxas would have lost his because they are two sides to one coin. The prologue was an interesting way to show the rebuilding of Sora's memories while giving us a new character to connect with and grow to appreciate.
Namine is Kairi's Nobody. She was created when Kairi's heart went into Sora in the beginning.
Roxas merges with Sora near the end of Kingdom Hearts II when Namine merges with Kairi.
Roxas And Namine Is Apart of Sora, Roxas is The Dark Side of Sora And Namine is The forgetten Part of Sora So he has to Save them In order to be Whole Again
Like Roxas, Namine is a nobody and she fused with her to become "whole" like Sora and Roxas
Kairi, because Namine is for Roxas. anyways if you played kingdom hearts one and two you would know Kairi and Sora are made to be together. oh and if you played kingdom hearts 358/2 you know Roxas was in love with Xion but he forgot that after he falled a sleep in kingdom hearts 2 to help sora with the help of namine also if you need any more help find me at Quizlla as Shelka
They get separated for awhile and as long as Sora and Kairi are together, they are too. :)
SPOILER Because Namine has to put his memory back together.
Namine put fake memories inside of Sora making him think she was important to him. When he finally meets her, she explains everything and with Sora knowing the truth, still tries to save her "fake memories or not."
technically namine IS kairi's nobady but made from her memories so her physical form was still intact . just like Roxas and Sora
Roxas should be with Namine. Because Roxas is Sora's Nobody and Namine is Kairi's Nobody, because Sora and Kairi's hearts of connected the sort of connects Roxas and Namine.
because shes a witch and in chain of memories sora goes to sleep in one to regain his memories
Near the very end of the game Namine appears,and Sora walks up to her but is stopped when an apparition of Roxas comes out of Sora. Then after Roxas' talk with Namine,he then fuses with Sora. So I guess you could say he's inside of Sora. Weird huh?