I don't know about sexist, but when it come to the sex life, he is definitly an idiot. There have been many case of him conducting cases of sexual assault towards women, when he was young, but most of it is to more in alliance with stupid, then evil.
I want to introduce u to a scene from the romantic movie Hitch, where on the street Kevin Space's character just went over and unconcent kiss the girl he like and just went on a date with and she like it and kissed back, that is romantic. But if she didn't like it and didn't kiss back, push him away and slap him on the face, then what Kevin Space's character did is sexual assault. So, the difference between romantic and sexual assault, is just one thin fine line. (This is also why, a lot of time girls think just throwing a bunch of sex signal to guys, hinting him for sex, he would get it, but in reality, most guys today will be more like that scene between Sheldon Cooper with Amy in Big Bang theory, where the 1st time they are about to have sex Sheldon said to Amy "We live in a civilized society, I need verbal consent.", but most girls would never say she want to have sex with u, just keep throwing u a bunch of sex signal, most men won't risk it, because if he mistaken her to be giving sex signal when she isn't that is sexual assault) Donald Trump when he was young, went to all boy school, most male of gen Y and gen X, that went to all boy school, tend to strike out easily while trying to get laid, when they are young, mostly because when we were teens, we see on TV about girls and sex, is always about girls don't want sex and only consider doing it, to try please her boy friend and adults telling them, she shouldn't feel pressure into sex and should only do it when you want, when our gen were teens, we don't see images such as girls checking out guys with six pack, it is almost as if, women have no sexual desire, so, in our early 20th we just about always strike out with girls while wanting to get laid, not because we can't get it, but the images we see throughout our teen, make us over think it, when girls are giving us signals, in Donald Trump's generation, boy school boys get their idea about sex through magazine such as Play boy (I know it is a WTF situation) and we know what that is like, so, with images such as playboy misleading the boys, you can image, the influence and why young Trump thought he could just kiss a woman without consent, and always result in romantic moment rather then sexual assault