Why do Hawkeye and Mockingbird divorce?
For at time Hawkeye and Mockingbird were the top super-hero couple. They even created their own Avengers team. Their relationship and even hero partnership went sour and the two split.
What happened?
Related:
Who is Hawkeye?
Who is Mockingbird?
The primary disagreement between Clint and Bobbi (Hawkeye and Mockingbird) is that she effectively kills the Phantom Rider when she did not need to.
In Bobbi's eyes the guy deserves it. In Clint's eyes an Avenger should never kill unless absolutely necessary.
The Phantom Rider effectively raped Bobbi by mind controlling her and making her think she was part of his time period.
However, to Hawkeye an Avenger should never kill.
This death leads them to break up and to eventually divorce.
The two do attempt to reconcile especially after Bobbi returns after Secret Invasion
Related:
Who is Hawkeye?
Who is Mockingbird?