Well, not really. Messalina seems to have been executed because she was plotting against her husband the Emperor. The main accounts we have come from Tacitus and Suetonius, both of whom were writing more than seventy years after the events they purport to describe and therefore their accounts are little more than hearsay. They are thus worth even less than the abject nonsense taught in US schools under the guise of "history" (and frankly that's saying something!). We see the same thing centuries later in the myths that were spread about Russia's Catherine the Great. Men love to spread salacious rumors about powerful women but that does not make such rumors a reliable source of information.