I know what you mean and even then, JFK still doesn't come off as sleazier than Trump, even if he slept with more women. As for allegations of sexual misconduct, assault and rape, that's exactly the kind of stuff going on with Trump, though perhaps nothing specifically determined. JFK was known for his sexual affairs, but it never reached the level misconduct, much less actual rape.
In fact the differences in promiscuity between Trump and Kennedy is kind of astounding.
Trump is treated as a dirty old man, well passed his prime, unlikable, distasteful, hateful and desperate to get with the younger audience. When it comes to sexual conduct, he is remembered more for "grabbing the pussy" and being spanked with a newspaper by a hooker, than anything resembling class.
In contrast, Kennedy was young, handsome and from the way its treated. You'd think Kennedy was sitting back in the White House, donning a pure white suit, smoking $10,000 bills. Draped in the arms of women like some mafia harem boss. Kennedy was basically treated as, well suave and it helped that, he showed far more respect to women despite his promiscuity. Even his relationship with the press could not be any more different.
Trump has made it an effort to make an enemy of the press, calling them liars and attacking them. Kennedy was the exact opposite. He built a friendly relationship with the press, to the point where he could openly commit to these affairs.
Kennedy knew how to be classy and knew how to be friendly, smart, suave and collective. He knew how to separate the appearance of his sexual life and his political life. Even the women he had affairs with, still treated him with an awe of respect and reverence.
A quote by one woman described him as:
"nice—considerate in his own way, witty and fun. But he gave off light instead of heat. Sex was something to have done, not to be doing. He wasn't in it for the cuddling."
Trump to this day is treated as a borderline sexual deviant, committing terrible crimes that women have spoken out against. 50 years later, the affairs of JFK may be known, but the women who had these affairs, have not treated JFK with anywhere near the same level of contempt that is given to Trump.
In the end, JFK literally was a classy, lady's man and while his affairs shouldn't be treated lightly, it was very clear that he was far more respectful with his promiscuity than Trump has ever been. Thus, even with having a larger sex life, JFK is given more respect in this regard.