Wait...are you seriously saying someone can't be masculine and show affection? Hell Sten shows affection towards the Warden.
Also she does not show more affection than the rest of the LIs they're pretty equal on that front. Morrigan has her ring, Zevran has his earring, Alistair has his rose and Leliana has...well Leliana's Leliana. (You know it's kind of lame everyone gets a gift to give to the PC but Leli. She just steals your eyelashes).
What blatantly inviting people you barely know (you can get that dialogue to trigger not long after Lothering) to sleep with you is a typical female thing now? Huh.
Edit: Ring not rose.
I don't really think blatant was the word I was looking for when she so sweetly said that it was cold in her tent where she actually meant that she would like to bang the warden right now.
What it typically female about it, is not being as blunt about it. I am sure I have written an assignment on communication somewhere, it is, however, danish so translating it will most likelly be problematic.
All I can really say is that it is typical for females to wrap what they actually want to say, again, using Morrigan. Where someone who is male will typically be far more blatant about it, asking if she want to come home with him and have some fun. Then a female, like Morrigan, would mention that their tent is cold, which could possibly lead to various answers, and it did, such as, should I get you another blanket? It wasn't really blatant that Morrigan wanted, was sex, and it is typically females to do something like this. Again.... exceptions exist.
What makes you think this?
Which part?
Females typically showing more empathy, care, gentleness, all these kinds of more soothing emotions. I would be so bold as to say that it is in our biology, I am not sure what others are taught when it comes to biology, the human brain and general communication, it could be very different and I would like to add that the grades we get here in Denmark is not necessarily the highest on a global level, so I could be absolutely ignorant for all we know.
The thing with gay and bisexual people being having more feminine traits than masculine traits however, is what I have experienced so far.