Hence why Battan likely opted to clearly frame the socks and thus Tazune ignoring Midori's very small request. It changes a little annoyance into just showing how little Tazune really cares about her.
He really doesn't have any special feelings for her. Tazune is obviously unenthusiastic towards this marriage thing, but he's doing it nevertheless because he thinks it must be done -- because social norm says a man must marry, have children, etc. Heck, even his career depends greatly on this.
It didn't have to be Midori, any woman would have done. They are all pretty much interchangeable to him. It just happened that, of all the women he fucked, Midori was the one who got pregnant. Tough luck.
Maki acted on her feelings and she got to be mad for a bit because she deserves to! She's really in love with Midori and it's good they'll get some time to work out their feelings.
That scene was great.
"It's not that I can't do it, it's that I don't want to do it."
That's Maki rebuking all the people who have berated her for her attitude towards Midori, claiming that she should forget Midori and find someone else. 
Also the page where Tazune grabbed Midori made me reel for a moment.
Poor Midori. Now his mere touch is enough to make her freeze in fear.
(Btw, nice bit of mansplaining: "Why didn't you just say it out loud? It's all your fault! You need to learn to speak clearly!" Asshole.)
Her mother basically says she's got to accept 'reality' (In the mother's case, being 'normal', i.e. heterosexual, having a husband, and then having kids) and Maki rightly points out that's not 'normal' it's going with the crowd.
Heh. That was one of the great lines of the chapter. Loved it. 
Hey, those two talking in Spanish ^ have a novel theory: that Tonoike could likely be gay, a repressed homo, and that's why he's so cold and indifferent towards all women, even the ones he dates and shags.
Hope not, he'd literally just be that one guy in Netsuzou.
It also beats around the bush that the reason why some gay guys are like that isn't cause they're gay, but it's cause they're men pushed to be misogynists imho
Lol, I remember the maxim: "All misogynists are actually repressed gays." There was a time, decades ago, when you could hear it everywhere, all the time. It was like feminist dogma. It's been discredited and has fallen into disuse since then...