OK, I am not single, I am not a woman. I do, however, have some insight. I once read an article about how to determine your (female) odds of getting married and the number one question they asked was: "How many new men do you meet a month?" I cannot tell you how many women I know who only meet the new pizza delivery guy. Is that who you want to have a relationship with?
I would also tell you there are aggressive women your age who move like lightning whenever an elegible bachelor appears. Even if that is caused by death. Point of story, don't play shy. Get in there like a roller derby star.