Asterix's relationship with Straw Feminist Bravura in Astérix and the Secret Weapon. Bravura uses her size advantage on him to physically, mentally and sexually abuse him, forcibly moving into his house, casually smacking him on the behind, picking him up a lot, gaslighting him, and ignoring all of his constant protestations. At one point, when he turns down a marriage proposal from her, she scoops him up and forces a kiss on him, so he punches her to get away, immediately feeling terrible about it and being ostracised for it by the other villagers. When Asterix attempts to vent to Obelix about how dismayed with himself he is for hitting a woman, Obelix just teases Asterix about his 'thing' for her, and spreads rumours around to the other men that he likes Bravura. In the final act, he suddenly changes his mind about Bravura after seeing her Armor-Piercing Slap a Roman centurion, they plot together to defeat the villain of the week in a way full of romantic Double Entendre ("It's my turn to make you a proposal!"), and the final page shows them demurely kissing and making up, with the implication that Asterix did indeed have a thing for her.
The cover, in true Covers Always Lie fashion, goes so far as to depict Asterix blushing adoringly at Bravura's affection, overwhelmed by love, while Obelix giggles at them in the foreground.
Bravura is described as Asterix's 'former girlfriend' in Asterix and Obelix's Birthday.
The feminist backlash against this book in French-speaking Canada was based around the scene where Asterix hits Bravura, even though she was clearly the abuser, and even though there are things going on in the book that are so much more sexist and insulting. One of the main campaigners admitted to Uderzo that she did not read the book and that when she gave it to her teenage feminist daughter to read, she thought her mother was overreacting.
In addition to the above, the hitting of Bravura by Asterix is hardly any worse than the punching of numerous romans throughout 50 previous books, all of which has been happily treated as a joke.
In the same story, the incident that causes Cacofonix to leave the village is getting a black eye from Fulliautomatix's wife. Everyone in the village is sad he's leaving, but considers it to have been Cacofonix's responsibility not to get hit by her in the first place, and his own weakness in deciding he'd leave merely because a woman hit him. The reader is supposed to feel sorry for him, though.
Subverted in Hawkeye #9, Spider-Woman finds out that Hawkeye had slept with another woman, despite being in a sorta-relationship with her (its not made clear exactly, but the implication is that Clint didn't know they were in a serious, closed relationship). She then slaps him twice and tries to hit him a third time, but he stops her and says that, while she's angry, she doesn't get to do that. Should be noted that Spider-Woman has super strength and could easily crack his skull, while he's a Badass Normal with no defense.
Janet Van Dyne aka The Wasp took advantage of a severe case of Schizophrenia Hank Pym underwent (an accidental chemical gassing leading to the creation of the split personality "Yellowjacket") to trick him into a marriage he wasn't really ready for, and never gave a thought about the help he clearly needed. Hank goes through several misfortunes leading up to a drug-induced mental breakdown,(this one now being his fourth!) and hits Jan in a fit of rage. Guess who was divorced, branded a wife-beater, and still blames himself for something that was beyond his control at the time, and who was thought of by all, in-universe and out, as an entirely innocent victim of abuse? This misconception is so widespread that speaking the truth of what actually happened can lead to accusations of victim blaming.
Impulse: This in a one-issue story where Impulse noticed one of his male classmates turning up with suspicious injuries. It actually did get remembered for a (little) while, as in a later issue the boy's mother gets visited in the mental hospital she was put in.
The violence in Baphomet and the Morrigan's relationship in The Wicked + The Divine isn't played for laughs so much as normative fantasy-violence for two angry young people with horrible emotional regulation in a mutually dysfunctional relationship. But this trope is then subverted when the reveal that the Morrigan's been physically abusing Baphomet in revenge for him cheating on her is treated with appropriate levels of severity.
Gryf's love interests Shun-Day and Shimy both abused him physically at some points, and it's always played for laughs.
Sheyla's violence on her brother Razzia was slightly played for laughs in a flashback, when she had just rescued him from bullies, and was mad he didn't defend himself. Ironically enough, he eventually learnt how to fight and became stronger than her, only to end up killing her by mistake when they ended up on opposite sides.
Amusingly enough, the same book portrays an inversion of this trope on the villains' side: when Count Kasino finds out his female assassin Bodyguard Babes have failed to kill his cousins, he starts insulting them and threatening them with a sword. Which is played as comedy.
In the "free comic day" Scott Pilgrimcomic, Scott is attacked by female ninjas and, much to the chagrin of Ramona and Wallace, refuses to defend himself because he doesn't want to hit a girl. Missing the opportunity to tackle the issue in a meaningful way, it's instead Played for Laughs.
Dixie from What's New? With Phil And Dixie regularly smacks, punches, or hammer-KOs her partner Phil, which combines this trope with Take That Me because he's Phil Foglio's Author Avatar.
The Penthouse comic Oh Wicked Wanda tended to have... questionable messages, but the ending stands out. The two female protagonists jump around time trying to change history, and eventually land in the future, in a desolate wasteland full of deserts and wrecked cars, and vocally agree that this is not good. Then a ragged, panicking man runs into them, and they see that he's chased by two savage women. Wanda reasons that women are now in charge, and immediately concludes that the world is in good hands.
XMen: Writer Chris Claremont loves "taking it out" on Cyclops. Wife, Madelyne Pryor punches Summers square in the face for daring to mention Jean again. The entire storyline involving the couple had Summer's questioning his wife's identity. One of many unhealthy details behind the relationship.