I've been trying to search for this book that I read a long time ago. This is what I remember from it and if anyone has an idea of what book/s I am talking about please tell me. I wish to finally be able to finish reading the series.
The book is about Werewolves and in that world people who hunt them and experiment on them (but I think it's after the 1st book that this happens)
3 brothers - all their mates have red hair
One character has the nickname Hulk from the mate of the first brother
In the third book Hulk dies, leaving his mate and the unborn child in her
1st: the first brother meets his mate . His mate is described to have red hair.
2nd: second brother meets his mate. They share a moment about the song Iris by Goo Goo dolls. Second brother is very closed off except for his mate. I think her name is Haley or something like that.
3rd: the third brother meets his mate in the institute where they lock werewolves to experiment and torture. She was as assistant helping them experiment on them but then they run away together to see his family.
Hopefully I'll be able to find it again.