LEXINGTON PATCH - Feb 4 - Just as we have distinct memories of our earliest feelings of affection, we also retain the ability to develop new romantic attachments in old age. For many, the death of a spouse or significant other can leave one partnerless, with decades of life ahead. As more people find themselves in this position, the market for senior dating and courtship grows. According to Mark Brooks the number of seniors joining dating web sites has been sharply on the rise since 2003, increasing every year at a double digit rate. This probably has much to do with the fact that people are living longer, healthier lives, as well as the expanding reach of technology into our lives.