Although, I'm not a TailsxCosmo hater myself, I just want to say that some of the comments here are very ignorant.
1. Where the hell are some people getting that Tails is 11? He's 8, and 10 in Sonic Next Gen. In fact, all of the characters are 2 years older in Next-Gen, so this would make Tails and Cream 10 and 8. He may have been 12 in some games, but only in SOME games, and I'm not even sure if that rumor is true or not.
2. So what if foxes eat rabbits? In the games, Tails and Cream are friends. In real life, a fox and a rabbit wouldn't even be that much! Also, foxes also eat hedgehogs, and Tails is also friends with Sonic. Please don't try to apply real life logic to a fictional series like Sonic, because it doesn't follow real life logic, and it shouldn't, either.
3. So, because Tails and Cream are only friends, and Tails and Cosmo liked each other romantically, this makes TailsxCream some awful couple? They're friends, and that's at the least. Plus, Tails knew Cream longer, and Cosmo isn't in the games. TailsxCosmo isn't a bad couple by any means, but still.