I'm a 28 year old (presumably) straight guy. I did engage in some childhood experimentation with a friend when i was about 11 or 12, but this ended pretty quickly and both us grew up to be (again, presumably) straight. I've been with my girlfriend for 7 years and i haven't spoken to my childhood friend in about 15 years.

Anyway, for the last 10 years, i've had a recurring dream (at least once a month but sometimes more) where i'm performing fellatio on my childhood friend. We're both adults in the dream, maybe late teens, early 20's. Although i've had this dream over 100 times, it's never involved anyone other than my childhood friend. I've also never been sexually attracted to another man in my waking, adult life.

Any insight would be very much appreciated.

You might gain some insight (and take some comfort) from the following definition of the key symbol in your dream on this website...

having sex: dreamdoctor.com/component/dreams/?contro...&task=details&id=963

sex: dreamdoctor.com/component/dreams/?contro...task=details&id=1655

You should also familiarize yourself with the meaning of recurring dreams:

dreamdoctor.com/component/content/articl...rring-dreams?lang=en

In the case of your dream, your childhood friend is likely to be symbolic of a current or new friend or possibly romantic attraction in your waking life. Going forward, every time you wake up from the dream, try to recall the events/people in your waking life the day before you had it... ones that might have triggered your recurring dream, given the meaning of its symbols. While it is possible that you may be harboring some latent homosexual tendencies/feelings, the fact that the dream involves someone you haven't spoken to in 15 years, suggests that the symbolism is pervasive throughout. As the dreamer, only you can validate its true meaning.

The good news is that once you understand its true meaning, the odds are that it will either go away or recur less frequently and at times that are consistent with your understanding of its meaning.

Hope that helps!