Schultz deserves so much better. That girl obviously doesn't care about him at all, she wants her past lovers, she doesn't want to cut off relationships at all, she doesn't care about anything he says and just brushed him off without properly listening to anything he said while he brought up good points. It ticks me off. There really isn't a reason for them to marry anyway if that girl marries the other girl. All this shows is that Schultz is an unfortunate lad who fell in love with a girl who doesn't give a shit about him and just wants various relationships and sex. I don't know why I should care about this black haired player girl.
But this is a story so they'll end up together anyway. W/e man.