No. They might start off as the same thing-- a wild and well-nigh ungovernable passion-- but love and orgasm are not the same thing. Neither are love and lust.
Lust is the desire to have-- it is that animal thing that makes you want to get hold of someone and crawl inside their skin.
Orgasm is, well, orgasm. It's a physiological reaction to stimulation. It releases hormones and engenders emotions that can, I suppose, be confused with love (which is why I argue that people should keep their pants up until they're already in a committed relationship with someone they know well), but it isn't the same thing.
Love is both deeply desiring someone's company, and trusting them as totally as one human being can trust another...
...and also caring more for them than one cares for oneself. It is not merely the ability to force oneself to put the other first, but the actual desire to do so (at least a fair bit of the time-- no one since Jesus has been totally selfless, and I wonder about Him sometimes).
I can see where life can make one cynical enough to equate love and orgasm, but no, they are not the same animal.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"