Board Thread:General Discussion/@comment-24880524-20140502022409/@comment-26808654-20140515235035

Cosmo was never in the video games, so I don't think it's fair to say she doesn't count. Especially since you never specified a continuity.

In Sonic X, Tailsmo still makes more sense than Tailsream. Tails and Cosmo had way more interaction than Tails ever had with Cream. Were Tails and Cream ever lost together? Did they ever have a deep relationship with the other? Granted, Tails has known and has been friends with Cream longer, but that doesn't mean they've really interacted. In fact, they seem more like mutual friends. I should also point out that using your logic, Sonails would be more likely than Tailsmo and Tailsream because Sonic and Tails have known each other longer.