When they’re Nice Guys (AKA, passive, insecure, entitled jerks who hide their jerk-ish tendencies with superficially “nice” behaviors)
Or when they’re just regular jerks, like the kind of person who is rude to waiters, makes “ironic” racist comments, makes rape jokes or says “gay” as an insult. (Acting like this isn’t limited to men, but I’m mentioning it here because it automatically kills my interest in dating someone.)
Being inconsiderate or unwilling to compromise- we only hang out at their house, I do all the driving, asking me to change big things to fit their lifestyle (like where I work or live- seriously, that’s happened), the time we wake up and go to sleep has to be on their schedule.
Not accepting it if a woman isn’t in the mood for sex, and using pressure or manipulation to get their way (“don’t you love me? If you really loved me, you’d want to” or “are you not attracted to me anymore?” [with the implication being that if you’re not, the relationship is over] or “just relax,” or “why are you being such a bitch?” or continued physical contact that leads up to the requested sex act.)
Also, asking for blowjobs all the time. A blowjob should be a gift, given freely whenever you feel like it. In that context, it can be a lot of fun. When I care about someone, it makes me happy to make them happy. You wouldn’t ask your loved ones for gifts, or make them feel obligated to give you things, right? There’s no faster way to turn a fun, generous act into a resentful chore. Addendum: when a guy’s idea of foreplay is me giving him a blowjob.
That’s all from experience (I’m 26), and it probably makes me sound bitter and jaded. Not so. I’ve had a lot of positive experiences with guys, and consider myself an optimist. But there are also a lot of guys out there who are very ignorant about the world around them and have a huge sense of entitlement, and nothing that’s ever happened to them has caused them to question that worldview. One man, who I respect a lot, put it this way: “the world doesn’t make them grow up anymore.”
It’s kind of a catch-22. If you’re an ignorant, arrogant jackass, you probably aren’t self aware enough to know it! And if you find yourself wondering sometimes, “hm, am I a jackass?” you probably aren’t one.