Actually I buggered up a bit there.
'Jeg like du' is more like 'I equal you'.
'I like you' would be 'Jeg som ligner du'.
'Vil du har lyst til danse' is more like 'Do you like to dance'.
'May I have this dance?' is 'Kanskje jeg ha denne danse?'
Sorry for the confusion and Welcome to A2K...."Dude"