There's an affliction in the Orthodox single community called Femophobia (fear of speaking to single women) and Guyophobia (fear of speaking to single men). It seems to afflict the Modern Orthodox Machmir-Chassidic/Yeshivish singles. I hope that I don't get it, but the quality of single women is not what I thought it would be in the third largest Jewish community in the USA.
Also at Sephardic, I noticed that the single women who are new to the fold so to speak seem to come for Mincha and Arvit, whereas the ones who have been religious for longer, only show up in the morning. I know the reasons why, it's very interesting.