It is possible that when you are staying together, you may quit the job for supporting the family. But, when you want to get separated then you would not immediately get a job. Since that you left job because of your partner, it is the responsibility of your partner to support you until you get into a job and start earning. For this you could claim for wife maintenance which is not considered as a legal point to be included in the document when there are no children out of marriage. So, consulting a lawyer could help you avail certain amount of money as monthly maintenance with which you could start finding a livelihood.