Nothing like attending a wedding with all of your married friends to remind myself precisely how lonely you are. Fun times.
Either you have too many too old friends or they got married much too early.
I'm in my late 20s, and most of my friends are in the 25-35 range. As a point of reference, my parents got married when my father was 25 and my mother was 28.
Exactly what I am talking about, too early!
*said man being 35 and not even slightly close to anything resembling a real relationship, not mentioning a marriage*