Heyyy!
I’ve just finished reading the first two chapters and I’m very liking your story so far 
The main character’s backstory surely is not something common and it’s very intriguing nonetheless!
I’ve noticed some things while reading that I’d like to tell you about
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Introduction: I must say that yours is a cool intro (when you put the definition of tempting), but I think it could be even better!
Ok, for starters, I don’t know about others, but I’ve really no interest in customizing my best friend, moreover because I don’t really have a reason to customize her
Plus you could avoid many lines of customization
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The second thing that I noticed and that I’ve heard many readers complain about, is the “English is not my first language” thingy
Ok, I know this sounds stupid but there are many readers that don’t like the fact that the author puts that writing at the beginning of the story (maybe they think there will be bad grammar ahead).
However I suggest you to remove it completely and maybe ask a proofreader to double check your script, there are many great people in this community that would help you
[Even because I notices some mistakes] -
Shorter flashforward: ok this may seem pointless but a shorter flashforward captivates way better the interest of the reader that will find themselves say “Oh my…how she’s gonna answer to that?!”
I think you could cut it shorter after “But…I love you…” + her shocked reaction. Then transition fade out black [this will give a suspenseful look to your beginning] -
Directing I noticed some directing mistakes that you made, nothing serious but a bit noticeable:
The first one is the “entering” of the characters, when you spot a character in a different place of the screen instead of the given one, you should also spot them when they’re off screen. With this I mean that when your character has to enter the scene and walk to spot x y z in zone 2, you should place the character in the same spot but in another zone (the character has to enter from right? well you place them beforehand in zone 3 but with the same coordinates). The final result is that the character enters with a smoother transition instead of appearing super big on the bottom corner of the screen.
Another mistake that I noticed is that whenever you want to make it feel like it has passed some time between a scene and another one, you just put a fading transition in the middle, but you should put in between the INT. BLACK - NIGHT background, this because you can make a smoother transition and maybe add a dialogue line in the middle “3 hours later…”
Another advice about directing, when starting a scene you should place everything on the scene with the & symbol and then transition fade in > this way the characters and overlays won’t appear out of thin air -
Height differences: I love when a boy is higher than the girl but Jonathan is too tall, like damn! She seems a child compared to him
Plus this is just a plus that doesn’t concern this point, however, when Jonathan first meets Tiff he describes the scene like a narrator, and I found it a bit awkward (since he’s there, he shouldn’t be saying “she got out of the way and started doing something else” > it’s a bit weird you could instead put a narrator speech bubble ) -
Drugs and beating: the last scene of the second chapter left me like “wth just happened?” it was a bit too cliché, and I honestly don’t like that guys find in drugs the solution, it’s sad and make it feel like it’s normal (?!)
Plus the beating…I think it’s a very touchy subject since there are many women that experience it on their own skin (so I suggest you to put a choice so that the reader, that may be sensitive about this topic, can skip it)
OveralI really liked the story so far and I may continue reading it since you left me with a big question: Where the heck is she and what happened to her?! My guess is that she’s at Jonathan house because he saved her 
Keep up with the great work and don’t hesitate to contact me if you have more questions 