@ISeeAngels Well, first, there are authors who only do those kind of stories, so:
For boyxboy: Amyscence [I think that's how you spell it], xxWhoAteMyCookiexx, and then there's one I really like AlyWasHere17 [I think she is probably the best, content wise, of all three... my personal favorite of hers is Top and Tail.]
For girlxgirl: LatoyaLove is a must. She has the most realistic stories I think on here for girlxgirl. She's also pretty talented. And then, there is this one author who had an amazing book that I loved... The books called "Chasing Love" and it's by AutumnBr33z3.