兵荒马乱为你画地为牢
[bīng huāng mă luàn wéi nĭ huà dì wéi láo]
It portrays an emotional commitment to someone, as if during times of great turmoil (war), the person would choose to stay bound by love for them despite hardships, literally meaning 'drawing prison bounds out of love in chaos'. Here, love is a voluntary limitation but with a strong bond.