The first threesome I had started this way. Me and my then gf met a chick on myspace, she was smoking hot. Both these girls were way out of my league.
Anyway we come over to her house. She's in her mid 20s, we're early 20s...she lived with her mom and dad because she had a young child and they helped her out. They were out of town so we had this huge house to ourselves. For some reason she had us hang out in a guest room that had 2 twin beds with maybe 3-4 feet between them. Me and my lady made out, had foreplay, and started fucking on the other bed while she watched. The other girl was so hot watching us, she had her head sideways looking in. Then I stood on the floor and had my girl lay on her back (fave position) and started hammering away. Then I had the GENIUS idea of picking her up and basically turning 180 degrees and laid her down right beside the other chick. She had a close up view of my cock going in and out and I could tell her wetness went up a notch or 2. I lean over and kiss her gently, and whispered for her to kiss my girl. (it was my girls first time with another girl and she was sooo nervous, it was the stranger's second time). She leaned over and they started making out while I kept ramming her. Then the new girl starting sucking her tits. The moaning of my girl got me so close, I had to pull out and just watch. As soon I pulled out the girls hand moved down to my girl's pussy while she kept sucking her titties. I started to help the new girl undress a bit, sucked her titties a bit. Then I just let the girls play alone while I went back and sat on the other bed. Eventually they started eating each other out. I took turns eating out the one who was bent over doggy style. I think each girl had about 20 orgasms lol. Unfortunately it was more about them and I didn't get any more fucking, just a handjob to finish the night off. I still can't believe I got both of those girls...I've since had better 3somes, in that I was the center of attention and in control, but I've never been with anyone hotter than either of those girls...