A. The squeezing of the toothpaste, especially in the middle of the tube.
B. Leaving dirty clothes lying around, instead of putting it in the hamper.
C. Wearing unattractive lingerie to bed.
If you and your spouse can see past these issues, then that's the foundation to a strong marriage. However, don't forget that both of you should discuss what these concerns are doing to your relationship; because it you don't, it can drive you "cuckoo cuckoo" ...