How I ask my lover to come with me to flim

What?

First of all, you need to use propre english.

Dating is spelt with 1 "t".

When you say film, do you mean movie at the cinema?

How do you ask? Just ask: "Will you come to watch a film with me?"

I think it's also helpful if you have a movie or two in mind that you would like to see. You can ask her if she has a preference.

On second thought, what's the big deal if this is already your lover?? Does flim mean something other than movie??

Lol
It sounds like you mean you want your lover to make a porno:D:D:D:D

You say* I would like very much if you would join me on (day,time)so that we could attend a film together(name of film)*.