Crawgarden's advice is right on. Let the pot start to dry out and at the end of October, put it someplace where it won't freeze: the leaves will yellow and wilt. 2 summers without blooming isn't abnormal. That is why crawgarden asked about the size of the bulb. Size can be a indicator of age and cultivar. The small flowered ones and the cybisters do not make large bulbs. If it is one of the cybisters, they can be treated as a houseplant in the winter, they often don't go dormant.
Young bulbs take 3-4 years before they are large enough to bloom. Some people claim that you need at least 4 good leaves before you will have one blooming scape the next year. If you had nice leaves this summer, and the bulb feels full and firm, it probably will bloom next year. If you adopted your bulb after it had bloomed for someone else, it could still take a few summers for it to rebuild itself and make new blooming scapes. Depending on your space and patience, I wouldn't give up on it. If the bulb continues to make leaves and not blooms, one of the things to check is sunlight. I recommend if someone has a bulb that only produces leaves, move the pot to a sunnier area. Here in Florida, Intense afternoon sun burns the leaves but often a bit longer sun exposure will trigger scape production.
