My sister and I both met a guy on a night out. He was very drunk at the time and kept saying he found my sister very attractive.
I met him a couple of weeks later (without my sister) and egged him on to go for her, but apart from that we had a good conversation and got on well together.
​We bumped into him on another night out and I encouraged him to go for her again.
He did and he succeeded. However, nothing beyond a kiss happened between them that night and there was no further communication between him and her. My sister had also been seeing someone at the time it happened, and they have since officially started dating.
​A month after he kissed my sister, I met him at an event and spent a lot of time talking with him. At the end of the night he walked me home and kissed me. I felt very guilty about it because of the fact he had already kissed my sister, and I found it a bit weird, but I couldn’t ignore the fact that I got on with him so well. He ended up texting me afterwards and eventually asked me to do something with him after a few days.
​I had already told my sister about the kiss (which she was annoyed about), but she was furious when I told her that this guy had asked me out. She told me that I wasn’t allowed to see him at all, and that nothing further could happen between us. I didn’t want to cause conflict, so I agreed that I would tell him to back down.
​He was very disappointed when I relayed the news and told me a couple of details that made the situation make more sense. Firstly, he didn’t remember our first meeting and had therefore been very confused when I had egged him on to go for my sister. Secondly, that he had enjoyed speaking to me so much that he had tried to find me alone that second meeting, but couldn’t (I had already left). Thirdly, that although he thought my sister was a lovely girl, he had had no intention of things progressing between them, and implied that he had gone for her as I had encouraged him so much (which made him think I wasn’t interested in him).
​My sister has told me that if he’s still interested in me in a few months time, I could maybe pursue things with him, but has hinted that that would still make her unhappy, despite the fact she is currently dating someone.
Am I wrong for wishing she would let me date him, as I get on with this guy so well and I don’t want to wait months to see if she will *maybe* change her mind?