Part 1 of either 2 or 3 
Here’s a basic guide (This is a basic guide because these are MY experiences so others may experience differently) for the example topic u gave (Break Ups):
This topic varies massively since it can depend on a lot of things. The commonly known categories of break up (in my opinion) are =
- Physically Bad Break Ups
- Emotionally Bad Break Ups
The overall category for the above is known better to me as either an end to an unhealthy relationship or an end to a healthy relationship that someone just struggles to come to terms with. Another category that is there but people tend to ignore (especially in Episode stories) are known as =
- Mutual Break Ups
These are when a relationship ends after both person agrees to end it. They can agree to end it for many reasons. Some couples agree to end it when one person (or both) needs to help themself grow as their own person without being heavily influenced by their partners ways of living. This can be when someone relies on the other person so much that they become dependent on the other or they rely on the other too much/excessively.
A few of couples (when they think they’ve ‘fallen’ for each other) become clingy and/or start to doubt themselves. They doubt the other person’s faithfulness (they may constantly find ways to ‘prove’ the other is cheating even when they’re not) they may doubt their own worth. Meaning that they constantly change their behaviour / appearance / personality / likes&dislikes or even friend groups just to feel more 'worthy’of the other person. As you may have guessed, the listed in this paragraph shows an UNHEALTHY relationship.
Couples involved in any of the above paragraph could end in a ‘bad breakup’ meaning that the clingy or doubtful person doesn’t recognise the unhealthiness of that relationship and seems it ‘normal’. The people who don’t recognise it, are often the ones who have either never been in a relationship before / have had bad examples of relationships (i.e = parents divorced etc…) or are just too uneducated on the red flags of an unhealthy relationship or it can end in a mutual break up where both agree to end it to help each other grow even if they decide that they’ll get together in another year or so.
Mutual break ups are not where one person decides to end it and just expects the other person to let them go or something similar.