Adultery, fornication and lust are clearly forbidden. These are the fruit of a dating couple touching.
Forbidden by your largely worthless book of hokum, which I don't subscribe to.
If touching (holding hands, kissing, or whatever) does not do something for you, why do you do it?
Oh, I assure you, it does. Unlike you baselessly seem to assume, however, as an evolved, sentient, educated creature I'm actually capable of consciously overriding instinctive and emotional urges. A partner and I having rampant, glorious sex, then, is not "the fruit of a dating couple touching", as if I had no more choice in the matter than a uranium atom struck by a neutron has a choice whether to fission or not, but my conscious decision*.
*A purely deterministic universe model could, in fact, contend that I have no free will and provide no differentiation between these two things in terms of possibility or choice, but then my every action, and that of everybody else, would have already been fixed since the very dawn of time by the particular way in which the universe formed, in which case I could hardly be held responsible and punished by your god for doing something he himself forced me to do (and, being omniscient, would know that he was) by the way he built the world.