Wow, I don't understand the hate for MC. Adrian is her childhood friend, somebody she knew for years. Then again there is something suspicious about him, but she noticed it, because she knows him that well. His family is in financial troubles, alright. But between the warning, that he's a drug dealer and the drink, he gave to her, only a few seconds went by. Of course she drank it. She did trust him so far at least.
There is also that, that other Lady was smitten by Adrian. Then Adrian somehow got engaged and his family got into trouble...and there is somebody out there, that seemingly hunts down every possible partner for MC.
So...
a) It is was it looks like. He got into financial troubles -> got engaged to that other girl + started smuggling drugs.
b) That girl created those troubles in first place to get his family to hand him over to her and framed him, when he broke up with her.
c) That guy created those troubles, knowing he would get married off to that other girl. But when Adrian broke up the engagement to went after MC, he went with Plan-B and framed him.
Okay. From the looks of it, Adrian actually drugged her, because he apologized, but that could also be a misunderstanding. Maybe he apologized for taking advantage of her being "drunk" and himself taking up this unexpected opportunity as he ran out of time, because he knew about the accusations. The police was also very quick on the uptake and saved her jus...why didn't that vile basta..Oscar step in earlier? He could have stopped that, but nah...let's wait for the police and make an enchanting entrance.
That guy is a stalker. He doesn't explain shit to her, which makes me doubt he is an ally and makes me believe he has ulterior motives. From the looks he interferes to keep her free for the right guy (himself?) and by doing so doesn't care that she feels unhappy. It might be, that fate or a curse is actually to blame for her misfortune, but then he doesn't explain anything to her. (Also part of that curse?)
MC should trust her feelings. They warned her that something wasn't right about that engagement, but also to help Adrian. She also sees Oscar as an enemy. Yepp, trust those feelings.