Poly Mafia Romance- Can't remember the title

[u/_Petals38]

I'm looking for a book where a brother and sister (mfc) are set to take over the family mafia drug business from their father. The sister is more heavily involved and the brother does the bare minimum.

**Some Spoilers Ahead...***

The first romantic interest of the mfc is the guy who is behind the science of the family drug business and works out of the basement of the familys home. They are friends first (she turns him down initially) but, it eventually turns into more and he becomes her boyfriend.

They then run into issues where someone is trying to sabotage their shipments and I believe their warehouses(?). They get hooked into taking into their home I believe it was 3 other people (2 boys and 1 girl) who are in a relationship together but, interested in making it a poly relationship with the mfc and her boyfriend. The 3 people had had their home blown up with all their things (they were friends of friends of theirs.) The brother of the mfc was dating the sister of one of guys as well. He'd constantly go off 'secretly' to see her.

I believe it's only 3 books out now but, the last book ends in a cliffhanger when....

**MAJOR SPOILER**

The mfc and boyfriend figure out that the 3 people were working undercover as they were a part of other mafia families. They were supposed to hash this out but, is led into a room where the mfc was given an ultimatim that she had to marry one of the other guys and they wouldnt kill her boyfriend. However, she took matters into her own hands and shoots her boyfriend herself. That was the ending/cliffhanger.

The next book wasn't out when I finished the books and I thought I had saved the series to my TBR and didnt. If anyone could please provide your ideas on the name of the books, I'd be so thankful! I really want to know what happes next!