I think you need better glasses because they have never used a condom in the kitchen ^^, we can see it at the beginning and every change of position , you do not like condoms, is a fact, but if they exist it is that they are useful
If they used a condom the first night, it's just because Adeline was on the end of her bad period, and that it allows her to avoid getting full of blood
I feel like you see condoms everywhere