you can't. let her go bro
it's either sasabay ka sakanya, or sya sasabay sayo. kung maayos naman situation nyo and both trusts each other, walang magiging problema about sa pag hhandale sa bawat isa. kung magkaroon na ng problema, that's were you make decisions kung sinong mag aadjust and kung anong mas makabubuti for both parties