Hi @Trappematter
I believe you want the form to only appear when a visitor clicks the teaser.
If so, set the teaser to display before and after the pop-up is displayed. Then under Display settings for the pop-up, select Timings and select Based On Rules. Then choose After Visitor sees a certain number of pages. Set this number of pages to a large value that is never likely to be reached in a normal session.
The outcome is that a visitor will have to click the teaser to see the pop-up.
I suggest split testing the form, and on the variant have the pop-up appear based on a rule that does not require the teaser to be clicked. You may find the conversion rate of the variant is better!
Hope that helps
Andy