Is breast milk suitable for adult? Now?

I am a married girl of 28 years. My husband is 30. My first baby was born in january this year but could not survive after 3 weeks due to feeding problem related with others. She could not consume my breast milk properly.              After her birth I am flodded with breast milk.I feel slight pain when it is full of milk.I tried to pump out it.But my husband desist me from doing this. He likes my breast milk and consumes it every night.Though it gives me some relief at the same time I eager to know whether the breast milk which is meant for babies is suitable for any adult person. My husband is comfortable with this. In future after the birth of my second child will the baby get plenty of breast milk as now? Mrs s paul.