Why just one?

I just heard one singular sound on TV and it hit me hard. It wasn't a voice speaking or singing, it wasn't any kind of music at all. It was the sound of keys landing on a table. It made me realize that I miss the sound of somebody coming home to me. Not that I miss any certain person, just that I miss having a best friend to share the rest of my life with. Don't get me wrong, I have a best friend that I can tell anything, what I don't have is a male counterpart. I don't even want a romantic relationship per se, I just want somebody who can give me a different point of view. Scratch that, someday I DO want romance. I want to be swept off my feet and chased, even after I'm caught. I am however very leary of entering into a romantic type relationship. Not only because of my own hesitation but because of my child. You see, my child has been asking when they will have a step dad. I finally asked why there was such concern about this and was met with a painfully unexpected answer. I was informed that "now that you and Daddy aren't married anymore, that means that he isn't my daddy now." As hard as it was, I stuck up for their Daddy. I reinforced the fact that yes, he was still their daddy, always would be and would always love them. And then I heard the comment that would rip out my heart. My child said "Then why doesn't he come visit us?" I can't get into something that would hurt them. I'm so very torn. I want companionship. I want romance. I want passion. I want love. Yet, I feel so held back because I refuse to let my children get hurt for some paltry quest of mine. Nothing will ever come before my children. I live for them. I would die for them. Sometimes I just wonder what the "right" thing to do is.