Well of course! I don't really like the guys who are tough all the way through! (they're harder to chew. :P) Why do you think all the women swoon when the hero in the movies cries? Sensitivity is important to us, because our most prominent hormone, estrogen, is practically an empathy machine. We see hurt, and want to do something. Even if we can't, we feel that we have to do SOMETHING. And when it comes to a guy sharing his feelings and appearing vulnerable, we girls just want to help make you guys strong, not because we think you are weak or something, but because our mothering instincts take over and we want to help.
you are set! if you can be sensitive enough to hear her out when something is bothering her or to talk about something bad that is going on in your life then you'll appeal to her inner motherly side and you'll score points but then if you add being tough on the outside you have just put the icing on the cake because every girl loves feeling protected.. keep it up!