The brother and ML has to pretend to date because of some circumstances maybe a blackmail to ML like bring danger to MC or sumn (betting on MLs mum doing something about it) causing the MC to get 'abandoned' and he felt betrayed so he ran away using the money (and with MLs brothers help) and now ML will look for him to bring him back. If it actually went like this im quitting
The brother and ML has to pretend to date because of some circumstances maybe a blackmail to ML like bring danger to MC or sumn (betting on MLs mum doing something about it) causing the MC to get 'abandoned' and he felt betrayed so he ran away using the money (and with MLs brothers help) and now ML will look for him to bring him back. If it actually went like this im quitting