Hell yes. In my meth days, I used two factors to gauge the quality of the rush: the infamous cough and the instantaneous arousal. Good crystal would chill my lungs and force a cough, and also bring a surge of throbbing heat and wetness to my ladybits. The
really fire stuff would give me a breathless choking fit and an orgasm simultaneously. I was dying and going to heaven, and it was glorious.
Meth increases sexual arousal just as universally as it does physical arousal (e.g. tachycardia and hypertension) and mental arousal (e.g. focus and motivation)--but this is not the same as the sexual preoccupation you go on to describe. In my experience, meth didn't conjure sexual thoughts and fantasies apropos of nothing. It did, however, allow--or more accurately
impel--me to focus absolutely, to the point of obsession, on whatever did happen to be on my mind. Thus, if I were thinking of sex I could think of nothing but sex, and I would indeed seek out more and more perfect porn, or fuck for hours without pause, or (as I was an artistically-inclined tweaker) begin ambitious portfolios of nude self-portraiture or written erotica; but often I was caught up in, say, researching lemurs on Wikipedia, or texting five people at once, or organizing my bathroom by color, and rode out my high perfectly happy, with nary a whisper of lust. If amphetamines induce sexual tunnel vision
every single time, I'd wager you spend a good bit of your sober time thinking about sex too
Though meth is undoubtedly a sexual drug, I perceive its essential character as closer to
sensual,a word that encompasses clearly sexual feelings and thoughts but also reaches beyond them to include all things physical or passionate: the tingles on my skin and the beat of blood through my veins; the intensity and focus I apply to my actions; the desire to talk and connect to others; the flights of ideas and the joy in creation; the electrifying moments when the veil of Maya lifts and I glimpse some ineffable Truth, and feel myself a part of the Divine. At its best, meth infused all I did with sensual energy; every action and perception and thought was like making love.