this is more of a inkitt / polyamorous cliche that brothers share their woman.
as a poly person myself, i would totally puke in a well before i share my girlfriend or my boyfriend with my brother.
when writing poly tropes, bear it in mind that successful group relationships are built on boundaries and as much as you love to show the handsome team of CEO chasing the female lead, it wouldn't work that smoothly - so kill your darlings.
- they fight over her and give her a chance to decide
- they make a bet on her and every guy wins... the catch is how?
- they leave her because they think she's indecisive, only to realise they're okay with sharing
- they've an angsty session on what to do with this shared interest situation
- one of them is crass enough to drag an escort home to forget her - in the end all the love interests end up pushing the escort on each other - frustrated
