I realize that much of this is not new, but it's pretty new to me. My experience, my blog, you know.
Usually, when I visit TC in New York over Shabbat, we go to his regular minyan for Shacharit. In that minyan, most of the people are old enough to be my (or TC's) parents. I also happen to know a few of these parentally-aged types. They are pleased that TC and I are together, but it's pretty low-key. I enjoy meeting TC's co-minyanites, just as I hope, when he is in town, he likes to make the acquaintance of my friends.
Last Shabbat, though, the regular minyan was having a special service that we (or at least I) didn't want to go to. So we went to Hadar (a post-denominational but essentially Conservative minyan founded by young people who are now in their mid-30's, although there are younger folks there, too). I had gone to Hadar when I lived in NYC right out of college, and I had never found it particularly friendly. I knew a few people from college and around the Upper West Side, but I never felt like I had an "in" there. I ended up going to another minyan (or two) regularly.
This time, when TC and I went to Hadar, the place had a totally feel. I felt like people were finally treating me like a whole person, now that I was part of a couple. I had several long conversations with people (people I already knew, but I still felt like I belonged). I knew more people there than I had before (people from where I live now who had moved to NYC, mostly), and of course I was more confident, with boyfriend in tow. I realize there are a number of variables here. But I still think that people closer to my age treat me differently now that I am "coupled." I told this to one of my Charedi/yeshivish friends, who is also old enough to be my mom. She was surprised, because she thought that since Hadar is all egalitarian and everything, people wouldn't be hung up on that. Ha! We're still Jewish, right? But it does raise of the question: if we're so egalitarian and progressive, why do we think women are missing something if they don't have a man?