Easy

I never was into the 'singles scene' nevertheless I was impressed with the realism depicted in this film.

its strongest point is its unpredictability, just like real life.

the lovemaking scenes are important but secondary, fully consistent with the realism in the rest of the film.

romance for 20 and 30 something singles is a veritable minefield and not getting any better. if you want insight into the sacrifices and rewards necessary to survive, starting with genuine loyalty topped off with a huge dollop of FORGIVENESS then watch this film.

and a happy ending to boot. likewise, very plausible.