I watched both 50 Shades of Gray and 365 Days (part one), and the main focus of those two are sexual relationships, so sex and erotica made complete sense, because they were the main plot in the storylines of both of those films (who thinks otherwise, in my opinion, didn't understand those films). Almost every scene in them was a scene of seduction, so that even the events from characters' everyday lives played a secondary role in the storyline and those events were used as tools to perpetuate the main storyline of seduction, eroticism and sex (typically the more sexually explicit variation of the knight - damsel in distress trope).
In Burning Betrayal, however, the sex scenes don't quite fit in. The main storyline seems to be the typical thriller type story which I won't spoil, but then that storyline is interspersed with sex scenes in an awkward and rather clumsy and disconnected way. For all I cared, it could've been a "food network thriller" genre and the characters could've fine dined instead of having sex. It wouldn't make much difference to the main storyline, because guess what - couples generally do engage in sex every now and then, but they also eat a few times a day too, so either wouldn't make a difference in the progress and development of the storyline.
It looked like the actors weren't particularly thrilled (no pun intended) to be in this film, and if its story stuck to the thriller aspect which was intriguing, the score would've been much better. Unfortunately, this time - 3 out of 10.
