I'm not great at enneagram typing. However, I believe I dated an 8 (and I think I'm a 1w2). I think I probably initally seem a lot more pliable than I really am. I'm not terribly vocal in the moment, but if it's over an issue that I feel strongly about, I can be. I think that was a problem in some ways, as it was unexpected, particularly for a person who was used to being quite definite and in the moment about feelings and actions. Even though it might take me longer to process a new situation, or even if I don't voice everything immediately, it doesn't mean I don't have very strongly held beliefs or thoughts about it. I think I was attracted to that ability to take charge in that way, even though I found as time went on that it did make for some communication/understanding divides between us.
I really don't enjoy angry feelings, as I find they mess up my ability to process what is going on and create a lot of unpleasant emotional noise (I don't mind conflict, and see value in it, but don't like feeling actual anger). Sad feelings on the other hand don't bother me nearly as much. With the 8, I found the reverse to be true. He really didn't understand why I would respond to an unpleasant situation with sadness (which he felt was unproductive). He felt that anger is a great motivator and fuel for the fire of dealing with the problem. I don't know if the anger was a personality thing or if it was due to unresolved past situations, but every now and then I was surprised by the way he responded to people when he was normally pretty genial, gregarious and fun. I think he was actually a lot softer inside and more easily bothered by stuff than I would ever have guessed initially. If I had it to do over again, I wish I would have known that earlier on.