hi...thanks for writing.. i have understood your concerns... u have depression in the past.. u have not written about your current mental status.. the decrease libido and poor erection is common symptoms with depression apart from the sadness and decrease interest in all activities.. in my opinion u shud consult a psychiatrist and tell him detailed history about your present and past problems..after proper evaluation only the diagnosis of your current problem can be made.. if it is a depression then with antidepressant drug your depression will improve and the sexual complaints will also improve because it is a part of depression.. if u are not depressed at present then your treating psychiatrist will guide for further management of your decreased libido and erectile dysfunction... so..when your depression and sexual complaints are improved, u are suitable for marriage... i hope u will find this advice helpful...best luck...