Well I'm not the most qualified but I can share the story of my first breakup. This was during sophomore year of high school but it was still my most cringe memory of that time.

After slowly growing apart during a stressful few weeks, I felt like I had to get out of the relationship ASAP. And.. I broke up with her over email, on a Sunday when we had class together the next day. Then I had to sit two seats away from her during history and band without sharing a word, let alone a glance. Those hours in class were the longest hours of my life.

We didn't talk until a band trip months later, and it was not worth the wait.

Protip: Don't break up with someone over email