Whether Ash and Misty have romantic feelings for each other has always been vague. As far as the anime is concerned, they're just very good friends. Close, sure, but not romantic. This didn't stop people from assuming they were together.

Did Ash and Misty get together?

Misty ended up appearing a couple of times in Hoenn. She reunited with Ash and Brock there only for her Togepi to evolve while she was away, so she departed from them again in order to manage a Togepi Paradise. ... After that, Misty remained a non-entity in Ash's life, especially during the Sinnoh and Unova Regions.

Does Misty want to marry Ash?

In Episode 41 “The Heartbreak of Brock,” a girl falls in love with him for once and quickly insists the two should get married. ... While this can be left up to interpretation, Misty clearly had Ash on her mind when considering future marriage.