Some people have been asking, where the idea of Sonaze came from. Currently, three Sonic games (Sonic Rush, Sonic Rush Adventure and Sonic & The Black Knight) contain friendly situations between Sonic and Blaze and even a bit romantic (Especially the scene in SatBK, where Sonic saves Blaze/Percival from falling).
I decided to find everything that contains Sonaze.
Blaze's first appearance, and also first hints of Sonaze
Sonic meets Amy in Zone 6 (Sonic's story), Sonic asks Amy has she seen Eggman or a cat girl called Blaze, Amy answers: "A girl? PLEASE TELL ME WHAT SONIC WANTS FROM THIS CAT GIRL!" thinking at first Sonic is looking for Blaze, because he "loves" her.
When Sonic questions Blaze about her nature first time, Blaze refuses to give information and leaves with Cream. Sonic meets Blaze again in Eggman Nega's base, he once again questions about her nature. Blaze turns and attacks on him, because she wants to do everything alone on her own and didn't trust anyone completely. They fight, until Blaze screams she would defeat Eggman Nega, and Sonic tells Blaze to stop fighting, because it won't change anything. Blaze tells to Sonic she's the only one who can save their worlds and he shouldn't disturb her on it. However Sonic wins the fight. Blaze realizes the error on her ways, when Sonic tells her: "A bit overzealous, aren't we? Hey, don't bite off more than you can chew and be yourself. Don't need to do everything on your own." Blaze answers to this that perhaps he's right. Sonic and Blaze introduce themselves to each other and team up.
Sonic collects the last ones of the seven Chaos Emeralds, but Blaze loses the Sol Emerald's power to Nega and fails to restore the balance between the two worlds. Sonic and his friends help Blaze realize the meaning of friendship, and Blaze turns into Burning Blaze and Sonic into Super Sonic. Sonic asks Blaze is she ready to do this together. They defeat Eggman and Eggman Nega. The two worlds are restored. Sonic tell Blaze that Cream is going to miss her. Blaze thanks Sonic for his help and friendship. Before she was going to leave, Sonic stops her. He says: "This is from me. I'll see you again!" and Blaze answers: "Yes... again.". Slowly Sonic goes up to her (At first you probably think they're going to kiss. ). They stare at each other for a while and hold hands long time. (And it kinda looked more than just friendly!) Their dimensions pull them back to their rightful worlds. As Blaze flies in her world, she realizes that now se truly understands her powers. Blaze's last words in the game were: "I understand now. My inherent power over fire. As princess, it is my duty to protect the Sol Emeralds. But because of my duty, I shut people out, and kept to myself. By trying to make it solely my responsibility, I almost put my world in danger. But then, Sonic the Hedgehog. I'll see you again!". Blaze smiles and flies away.
OTHERS COMING LATER, I GOTTA GO NOW, NO TIME!