Attachment styles and communication is the first subreddit topic. The second subreddit is about whether we all need to have a secure attachment style to have successful relationships. Communication styles are a major factor in attachment theory. The secure attachment style, the preoccupied anxious attachment style, the dismissive avoidant attachment style, and the fearful avoidant attachment style, also known as the disorganized attachment style all have variations in how they communicate.

Communication is key for relationships whether you are just dating or in a marriage or long term partnership. Communication is something a secure attachment style is usually good at. The preoccupied anxious attachment style and the avoidant attachment style with this more.

The second topic discusses whether we need to have a secure attachment style to make a relationship work. While this would be nice but that's a hard feat to achieve. You can have success in a relationship if you are working towards a goal of a secure attachment style. You can have an anxious attachment style and have a successful relationship but your level of anxiety is key. The same goes with the fearful avoidant style and the dismissive avoidant attachment style. Their level of their insecure attachment style has a great effect on their chance of success. 

Knowledge of attachment theory is an important piece for dating and relationships.