>>25278954apperently you can select your partner's gender by either selecting a cool or a cute partner. (Cool = male, cute = female). The only difference are some pronouns and words (german version says "Partnerin" (female buddy) instead of "Partner" (male buddy)).
Now some people spread misinformation like "hurp durp forced gender !!!" (like
>>25278580 and
>>25278977 ) because they picked cute, saw her partner getting adressed as a she and started a shitfit.
A simple google search would have clued you in, but nope.