If you have a girlfriend, you know that your chances for an amazing threesome with her best friend are quite small, however, you can always find porn with such concept, especially on sharemybf.com. There are quite a lot of videos on this website where you can enjoy incredible threesomes where studs get to penetrate their girlfriend and her best friend. All of these videos have good production, and they come in pretty good quality as you will be able to see that on the homepage thumbnails.
One thing that is a must mention, is that you can not see trailers of the videos, besides of some that have animated gifs as thumbnails. In order to watch full videos, you will have to register for a membership, which comes in 3 different offers, and the longer you subscribe for, the better the deal.