Bruce's heat hits early while Clark is in the room. They end up sleeping with each other even though they aren't mates. Unfortunately, that one act has the biggest consequence.
Crossover - Batman & Superman - Rated: M - English - Angst/Hurt/Comfort - Chapters: 65 - Words: 210,692 - Reviews: 204 - Favs: 103 - Follows: 108 - Updated: 3/25 - Published: 10/23/2016 - [Bruce W./Batman, Clark K./Kal-El/Superman]