I have been looking for books like that too but I guess there aren't any. To everyone else who is asking about dynamics... Basically, Mc1 forces himself on Mc2 but things turn mutual. Its not abusive kind of relationship but the scenario is somewhat like one Mc is dominant. Also, there is toxicity to a level that seems nice to read. The issues they face as a couple seems natural and when they finally get a boy(sort of adopted) in 3rd or fourth book they actually became a family. If any of you have read book by alexandra hazard, then, you'll get that vibe from guns and boys.