To be very honest, nothing will make you pictures look exactly like film except shooting actual film.
If you're still insisting on digital then there are some film-simulating LR presets out there.
You can easily google for them. But consider them as 'film effects' but not a substitution of film.
I personally use 'All Films v2' from RNI (reallyniceimages.com).
In the most of cases they do pretty well and color rendering looks similar to what I get from professional film scanner when shooting Portra or Superia.
But sometimes they require manual correction in HSL section if picture contains any artificially bright reds or greens that drive my 5DIII sensor crazy.
Just a few samples:
Good ones. Looks like what I need.
Do you know if there is any chance to achieve similar looks with Adobe's built-in presets or profiles or whastever?