What's wrong with me??

So last night, my boyfriends friend came over and was hanging out with us at the house. We were smoking and drinking and feeling good. With everything in my system, I kept on getting dirty thoughts. I'm super sexually attracted to my boyfriend (like all the time lol) and so I would start talking dirty to him really quiet and everything. Well I know that his friend likes me, and somewhere along the line, I started imagining the three of us in a threesome with each other (which I would never think of while sober). I'm not going to say anything about it but am I wrong? It's not like I daydream about our friend, I was just well aware of how he feels about me and at the time my imagination was just creating strange scenarios. Is it weird to want to try a threesome in general?