<human>: Condense the text into a few key points

Hello /r/relationships

Me and my partner have been together just over 9 months, and the relationship itself is brilliant, we're very close, no major arguments, I definitely feel she is the one. But, she has zero interest in anything sexual, I've sat down and discussed this with her for about two months, and she is certain that their is nothing going to change in the scenario.

As much as I want to understand, I know it may sound petty, but I do need sex. However, I do not think that this is enough to end a otherwise perfect relationship. Because of this i'm considering finding a casual encounter to get it out of my system, not an affair, just about sex. I had brought up this idea to her two weeks ago, but she is completely against it and calls it cheating . So I'm in a predicament 
I know myself that guilt will not be an issue to me here, I just want to hear your opinions on this, shall I get this casual encounter with probably a prostitute, or are other options open to me.
<bot>: Dead Bedroom, don't want to end it, is hiring a prostitute for a one night stand my best move?