As I can't find the post I wanted to share in this thread, I'll add a couple that are less interesting from a sexual point of view (although they should have been in the other post that I can't find).
The summer before I turned 29, a young women who had just graduated college (6.5 years younger than me) saw me around at the office where we both worked, apparently took a shine to me, and told her roommate she wanted a date. Although a couple of dates happened (in the traditional sense of "going out" on a date as opposed to the sexual implication) she and I weren't actually in a serious relationship until 2 years later, at which time we were no longer coworkers (although she wasn't herself opposed to dating a coworker). This didn't last basically because I wasn't neurotypical enough for her. Interesting note about this situation though, is she had attended a school in her state's university system that was traditionally all-female, and at the time was still not fully coeducational, and also had fairly average looks, so she wasn't accustomed to being hit on much by guys and apparently thought she should actively pursue guys she was interested in, and it took some time for her to admit to herself that I wasn't the right match for her (except physically ).
When I first moved to the garden apartment where I was living when I met my wife, one of the neighbors (about 3 years older IIRC) basically just started hitting on me. For example, she would pay attention to when I got home and then call me to say some random thing, and would otherwise take every opportunity to chat me up and invite me to do stuff with her. Unfortunately, she had medical issues I wasn't ready to deal with (TBH I'm fairly certain had I been 10 years older at the time I met her, those wouldn't have been dealbreakers). Sad because she and I got along quite well.
The last example I'll cite was meeting my wife. I am some other younger people in the area had formed a Single's group which put on mixers. My wife came to one on the suggestion of her therapist. I asked her out, and after about 4 dates we became a couple. Definitely the most conventional courtship I experienced.
Note: before meeting my wife, I dated somebody else I met at the aforementioned mixers. I think I will post about that on the thread in the Adult section though.