Was it my fault ?

Me and my friend for almost 8 years were at this bar and a guy approached me ..he asked me if he could join me and my friend .. I said sure and by the end of that evening I gave him my number as we realised we work for the same company ( huge office never saw him before)..but I didn’t find him attractive for dating .. I thought no harm in being friends.. he called me up next day I realised that he was looking for a girlfriend.. I told him why don’t I connect you to the friend of mine from that previous night. I gave him her number. As I knew she was also looking for a steady boyfriend and she liked him. Things got pretty serious between them and they got married after a year .. she is a very close friend .. I generally hang out with them. 6 months after their wedding I had gone to another city for a conference . There were a few other seniors.He texted me saying he’s also going for that conference and we should catch up . I texted his wife(and my friend) telling her this. She said to go out for lunch with him. Without thinking much I went for lunch with him alone for the very first time. We ordered some wine with the food. I had 2 glasses of wine and some pasta. I don’t know what happened to me . I started feeling dizzy. I felt as if I have smoked a joint . I couldn’t walk properly. My head was spinning around. It had never happened to me before.I remember walking back to our hotel. But after that I don’t know what happened. When I woke up I was in his room in his bed fully clothed and he was trying to unzip my pants . I pushed his hand away and got up . He was awake but he acted as if he was drunk or sleepy . I left the room. I was in a state of shock. I felt that It was all my mistake. He texted me the next day please don’t tell anything to my wife and your dear friend .i realised that he was very much in his senses. I had to tell her. I don’t know if that was the right thing . I texted her everything. She replied back after a few hours saying her husband has a different version and she doesn’t know who to believe. He told her I tried getting close to him. She chose to believe him and has stopped talking to me. I feel disgusted and depressed at the same time . How could she believe him and not me . Was it my fault that I went out with him alone. I feel he spiked my drink as I had a blackout . I feel terrible about this entire thing. I know she must be really upset and heartbroken about this too. But how could she not believe me .Don’t know what to do.