From my childhood I had strange fantasy about deep love between twins - brother and sister. We can refer this to twin flames conception. It is partly right, but from the other hands twin flames doesn't resonate with me as much.
Very often I clearly felt that I have a real twin brother. They relationships sometimes involve sex, sometimes - not.

In fact sexual intercourse is a symbol of union ( one of my favourit authors Helen Blavatsky also stated that, and I agree with her). It is just a symbol, but not actual union. Sexual intercourse exists for the sake of physical procreation. It is not bad at all! It is just the nature of things.

Probably many of you will disagree... but I don't claim that my opinion is ultimate :).

Well, returning to my fantasies. The twin brother is very powerful, and somehow this power is destructive. The twin sister embodies love and feelings. He embodies power, she embodies love. After watching X-men movie I even thought that Wolvering could have twin sister, and hey both could have different genetic mutations. Strange enough, this doesn't involve sex at all.

During last 6 or 7 years my drive towards twin's love was lost. This was a real hibernation, and also years of very intensive work. And now this is time for resurrection...
Now we should pay closer attention to inner feelings and symbols. They could help us, as well as other people.