Yaoi and Yuri (also known as Boys' Love and Girls' Love, respectively) are Japanese genres which have homosexual romance themes, across a variety of media. Yaoi and yuri have spread beyond Japan: both translated and original yaoi and yuri is now available in many countries and languages.
The two participants in a yaoi or yuri relationship are often referred to as seme ("attacker",攻め or せめ) and uke ("receiver",受け). These terms originated in martial arts and do not carry any degrading connotations. Seme derives from the Japanese verb semeru (“to attack”) and uke from the Japanese verb ukeru (“to receive”). Though gay males are often referred to in English as "tops" or "bottoms," seme and uke are more nearly analogous to "pitcher" and "catcher." The seme and uke are often drawn in the bishōnen style and are "highly idealised", blending both masculine and feminine qualities.
So are you the seme or the uke?
I'm very non assertive so I'd probabally end up being the uke.