I looked through a lot of Cosmo when I was a teenager visiting any of my girl friends houses. Even in middle school these girls were talking about dating and social dynamics of who calls first and when. So I always felt more comfortable talking to girls about sex - not as a sport but more about what they like, funny stories, what makes them feel sexy etc.
Seduction for me has been figuring out what makes a girl feel sexy and to go do that thing. Asking girl friends will get you answers. Asking girls who you think are sexy will help a ton. Creating a jealousy plot line by asking a long-term target to help you seduce another girl helps as well.
I say we go find out what makes the type of girls you are into feel sexy. Even if, no... especially if, that girl is your Main.
PS: Obligatory cosmo link [Realistic Threesome Position Number 6]([http://www.cosmopolitan.com/sex-love/positions/news/g4199/realistic-threesome-sex-positions/?slide=6])
there doesn't seem to be anything here