I have a bit of experience with this. I accelerated several years in multiple subjects early in elementary school (base 5th grade at 7, some middle school courses), and I enjoyed it quite a bit. We moved a lot after this, and I ended up accelerated further and de-accelerated and everything in between for a few years. I started college part-time at 13 while staying part-time in high school (mostly for activities/sports purpose).
For me, my only regrets were not staying accelerated and not accelerating further, as the academic opportunities were wonderful and I was able to use some of the saved time to pursue other interests without getting behind in school (studying abroad, internships...).
The dating issue did come up for me, as well. I dated an older man when I was 15, and it brought up some of the problems discussed in previous posts. I was mostly supervised on dates, as well. However, by the time I was about 17, I was able to find boys closer to my age who caught my interest and could hold interesting conversations.
For me, having opportunities to meet others who were radically accelerated or partly accelerated helped with the social aspects. For instance, when I started high school, I had a "buddy" to help me, who was a smart senior who had been accelerated two years. It definitely helped me feel welcome and get over some of the awkwardness with new classmates when I was noticeably younger.
Dual-enrollment probably helped me as well. I was able to be academically challenged without having to give up all of the social/sports aspects of school with kids closer to my age--kind of a best-of-both-worlds sort of thing.
Flexibility was also a nice part of my education. Whenever something new was tried, it was with the understanding that it could be undone if needed. It might be something worth asking if the permanency issue is what is of concern to you...
