There have been instances of them being shown to be close, and Amy expressing her romantic feelings for Sonic, but they haven't shared a kiss.
It's important to note that:
* The relationship between Sonic and Amy is a matter of interpretation and fan debate. Some fans enjoy the idea of a romantic relationship, while others prefer to see them as close friends.
* Sega hasn't officially confirmed a romantic relationship between Sonic and Amy. They remain close, but there hasn't been any definitive statement from Sega about their relationship status.
* Fanfiction and other non-canonical works often explore the relationship between Sonic and Amy in different ways. These stories are not official, but they can provide interesting perspectives on their dynamic.
Ultimately, whether or not Sonic and Amy will ever kiss in official media is up to Sega. However, their relationship is a popular topic among fans, and it's likely to continue to be explored in various ways.