Since you have been together for more than a year, I think he loves you and you love him. If you love him, you should lend him money. Besides, he bought you so many things before! But you have to see if his business can go on. {You'd better write an iou}
Another way is to let him take his ID card and household registration book to the credit union for a loan. {No guarantee is required for less than 20,000 yuan}