Why it worked
The video uses a relatable emotional state (moving on from an ex) and directly offers a solution (Hily app) in a concise and visually engaging manner, making it easily shareable and relevant to a target audience.
Product placement
Hily (app for dating): ACTS - it is presented as a solution for moving on from an ex, implying it is used for dating and finding new connections. Removing it would change the video's message. HilyApp (app for dating): APPEARS - it is a hashtag, likely referring to the app. Removing it would not change what happens in the video.