Must: Question Tags

[Tom]

Dear all
Are the following question tags correct?

. You look at her like this.You must like her, don't you?
You must be enjoying it, aren't you

thanks in advance

Tom

[Alan]

Hi,

I would be happy with: You must like her, mustn't you?
You must be enjoying it, mustn't you?

Have a look at these tests I've written:

Question Tags (1)
Question Tags (2)
Question Tags (3)

Alan
_________________
English as a Second Language
You can read my ESL story Present Simple