Was Minnie and Mickey Mouse Twins?

To clarify things, the two characters are not twins. While a lot of people were confused and initially thought that Mickey and Minnie are from the same family, they don's share the same bloodline. Mickey and Minnie are not siblings or twins because they are married as Walt Disney has explained in a previous interview.

Are Mickey and Minnie twins or dating?

They don't share the same bloodline and are absolutely not twins. If their same last names make you wonder whether they are twins or even cousins, stop right there. Mickey and Minnie are a mouse and that is the only reason why they have “mouse” attached to their respective first names.

Are Minnie Mouse and Mickey Mouse siblings?

The Mickey Mouse family are the relatives of Mickey and Minnie Mouse.