2. You Might Bicker More Than Usual
For the main reason, see above. You might get in small spats about who ate the last cookie or why the laundry is still in the dryer. Additionally, there’s no veil shrouding your actual annoyance with the fact that your partner left dishes in the sink…again. With a roommate, you may just bite your tongue and complain to your friend about it later. But when you are living with a partner, you are probably going to be more inclined to let them know what they are doing is bothering you. Which, in the long run, is much healthier than bottling it up.
3. You Will Learn Everything About Them. Everything
There is no more privacy or personal space. You will need to quickly get over your embarrassment about bodily functions or the way you fall asleep or the voice you use when you talk to your pets. You’ll learn each others’ every last quirk from your weirdly strict routine in the morning to your sleep talking at night. This will actually work in your favor. You can both get into a routine that works around each other, making life seamless, and you can divvy up household tasks based on your preferences so that cleaning the house isn’t so dreadful.