Answer
(Fatwa: 186/163/D=1431)
In getting loan from bank you will have to pay interest. Giving and taking interest is unlawful, so you should not take loan. Arrange a simple marriage, and avoid extravagance and spendthrift. It is mentioned in hadith:
أعظم النكاح بركة ، أيسره مؤنة.
The most blessed marriage is one which bears light expenditure.
Why you are making yourself more burdened by taking loan, and why you are including the misfortune of interest in your life? Gradually, try to pay the previous loan, and ask Almighty Allah for goodness. Get yourself married, in-shaAllah you will flourish.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband