Looking for movie titles (romance) Netflix, Amazon or Maxdome?

I'm looking for a love movie. Can only remember the following things:

She is the sister of his best friend
Best friend (her brother) has a wife and a child
play a love relationship with the parents
live in an apartment above a shop
She tries underwear and then it comes to S.
at the wedding dinner she gets up and leaves (two crazy cooks)

That's it, I hope one of you can tell me what this movie is called.

I'm not sure but maybe it's:

"Engagement with obstacles"

https://m.moviepilot.de/movies/verlobung-mit-hindernissen

Many thanks Emmakaa25, this is exactly what I'm looking for.