I'm drawn to thinking types.. The NT temperament. NFs are fascinating and fun and I can swim inside their soul and they in mine almost instantly, but I find a relationship with another NF (for me) is too unstable.
My intj actually has a pretty rich inner emotional world, but he's very strategic (who can resist using the word 'strategic' when speaking of intjs??) in who he reveals this aspect of himself to. (I happen to be so lucky.) I think once a thinking type has decided to open up, they are very warm and affectionate. It seems the way they warm up is by learning from their partner and also from being accepted by their partner. If you try to pry them open it won't work and they won't bleed their heart all over you right away--it has to be shown that you can be trusted and that you are not interested in controlling or changing them... I think.
Also, what I love about intjs is that if something matters to them, they don't give up. They sincerely work at it.