My friend, his wife and i, the three of us are in bed for the first time

Last night i went to visit a friend when we had spoken and he was not at home, i attended the woman who is always very nice to me. she told me to wait and invited me for a beer. she opened one too. we started talking and since my friend was not coming, we had another beer, then another. i was a little drunk and my friend's wife was having a good laugh. then she moved closer to me and pulled some clothes she was wearing saying she smelled very hot. she brought her face close to mine and i kissed her. i don't know how it got there, but when my friend arrived i was in bed with his wife. i tried to get up and apologize, but he undressed and join us. the three of us had a great time together. so i asked him if he hadn't bothered and he told me that it was a long time ago that his wife had asked him to have an experience, and that they had planned that day, that is why he had come back so late. if i don't accept the proposals, then he wouldn't say anything not to get into the engagement. so, every so often we have agreed that the three of us will meet.