Tails and Cosmo because of these reasons: 1. They actually loved each other. 2. Just because Cosmo is dead doesn't mean anything. 3. Tails and Cosmo is the only real cuple in Sonic x. 4. Tails didn't want Cream at all. and 5. Tails and Cream is all a fake. Your opinion?
Personally and honestly, Tailsmo is and always will be the best Sonic couple ever. The thing is that Cream doesn't even have feelings for Tails and vise versa. Tails on the other hand feelings Tails has had feelings for Cosmo ever since he realized how special she is to him. I mean, if Du watched Sonic X, Du would know why I Liebe them so much. Plus, Tails is even Mehr Merida - Legende der Highlands around her when it comes to her safety, which is the sweetest thing ever!! I literally cry every time I seen them.act all cute near each other oder worry for each other! Any other Tails couple isn't real and won't be. Tailsmo.is the true Tails couple!!!