Redbone is absolutely right. YES you need to be that 'good guy' to them, but you have to relate to them in a multifaceted way. You have to be that 'nice, good guy' when they need that... and at other times, you have to flash a little masculine arrogance. No, I am NOT saying you should be masculinely arrogant, but just be able to play that card when appropriate to remind them that you are a man. Additionally, you have to be completely into them physically, when intimate, devour their bodies physically. Wham bam is for novices, you have to slowly tease them, tittilate them, make them want you... and sometimes you have to be downright carniverous, an uninvited hickey, a surprising slap on the naked *** when they are not expecting, a bite on the lip, an unforgettable oral session to her completion (learn how to do that, you can learn this with a little web studying and you will be a god to her for it), perhaps a little mild dominance, ORDER her to get on her knees and let your oral pleasuring of her sliiiiide into a surprising rim job, get into her, show a little passion.... and when waking up the next morning, be lovingly affectionate, and then follow up with something sublimely romantic, like a single perfect rose sent to their desk at work with a nice card telling them how much you love to spend time with her, how you think about her all the time, and how much you are into her hot body.
Get that balance right, and you will be a god. Take it from me, I'm Steve Austin.