Frederik's ex Maria Montell discussed their relationship in a recent podcast. I am posting multiple links, not because the info is different, rather for the pictures. If you use Chrome as your browser, you can translate the articles into the language of your choice.
I 90’erne dannede Maria Montell i et års tid par med den daværende kronprins Frederik. I podcasten ”112 for knuste hjerter” sætter hun ord på forelskelsen