When your woman is talking, upset or enthusiastically to you, take a breath into your belly, relax your jaw, look her in the eyes or at her face and be right there with her. Let her speak for a few minutes minimum without interruption. If she's upset, when it feels timely, say something like: "I want this to work out for you/us too. I love seeing you happy and I want to support that in any way I can." If she's enthusiastic, say something along the lines of: "That is so awesome, babe, I love seeing you this fired up. You deserve it." Don't try to solve anything unless she asks for it.
Really listening to her and responding with masculine presence is one of the most effective aphrodisiacs for feminine women. The biological response is complicated but the simplest way I can put it is, she feels safe because you have her back. The feeling of Safety allows her parasympathetic nervous system response to kick in, which lets blood flow to the genitals. The opposite is true too, if she doesn't feel Safe with you, excess blood won't flow there.
Disclaimer: She can tell if you aren't genuinely interested or feeling the words you are communicating. These tips are NOT to help you "get laid"... they are to help you understand women and how energy flows between you 2 when done authentically.