Yes, I have several. I think I have realized that I am a little bit POLY. I can be monogamous, but I can have strong feelings and attraction---sexual and emotional---for more than one person at the same time. Love is love. I think when you truly love someone, that love lingers on, even after the relationship is over. But the question is about missing an ex---and it is not necessarily about love or sex. I have had a few very powerful relationships with individuals who are indelibly connected to me. There is an invisible thread---that is rooted deeply between us.
Sexually, I miss several guys who were pivotal in my "sexual education" over the past two years. One moved out of state, and the other one I have written about on here before, Edward. Sexually, my body hummed like a tuning fork, in perfect pitch, whenever we were together. I still dream about him, and I still think about him every day. That may sound extreme---but I loved him. I have another recent ex who I feel that I have "unfinished business" with. I miss him even though there still is a remote possibility that somehow things could work out with us. But currently, we are not officially together, and he lives in another city. So I miss him and crave him and lust over him.