gěi yī gè lǐ yóu, duì fāng gèng róng yì jiē shòu, yě bù huì xiàng yìng qiǎng mǎi dān

给一个理由，对方更容易接受，也不会像硬抢买单。

Providing a reason makes it easier for the other person to accept, and it won't feel like you are aggressively forcing yourself to pay the bill.