Both. Without chemistry, you cannot even start a relationship. Without compatibility, you can never make it long-term.
Compatibility -- it lasts longer, is more secure, and doesn't burn out. (I'm pretty sure Charlie Sheen has lots of chemistry in his relationships, and look how they're worked out.)
It has to be some of both. It is the same as trying to keep a wet log burning when lacking the spark or the ember. LTR are wet logs, they take work to keep them hot.
Yes both!!! Compatibilty and spontaneity. the ultimate combination.
Both and throw in a healthy dose of respect.
Chemistry, I have learned compatability does not matter too much.
If I had to chose it would be compatibility, everything can be worked out from there :)
I think you have to have both. Without chemistry I don't think you'd be really compatible and if you had no compatibility the chemistry wouldn't last very long...
You don't have a choice. No one does. Because chemistry wears off and will not be there in any signficant way in a long term relationship. At that point, if you don't have compatibility, you'll have very little.
both but if I had to pick only one I would love to be compatible!
You need both, chemistry will take you far, but without the compatibility it can strain your chemistry
Chemistry - it's something that can't be learned or acquired ;-)
You will need both.
Chemistry. Lots of bangs and plenty of reactional heat ;)