I have tried. I lived in dormitary. I asked my gf but she initially refused. Then I gave my key to my friend. When I was having sex with my gf, he came in quietly. When I finished, he then joined us. My gf first refused but then was happy to continue. That was really excited when 2 men trying to kiss her tongue.
When I friend finished, I then join again. My friend did the same thing. That last for almost an hour. After that, my gf was very shy and then I ask my friend to leave so that she won't be to embarrassed.
I have tried that with my other gf and most of them behaved the same. They would not say yes, but when that actually happening, especailly at night, but won't allow you to do that. But don't talk about that afterwards.
Do any brothers have their expereinces?