Maybe you should find out for yourself, but I'll tell you anyway.
SPOILER!
In the New Prophecy they break up because Squirrelflight thinks Brambleclaw shouldn't hang out with his half brother Hawkfrost because he's too ambitious, which she's right in the end and they get back together!=)
In Power of Three they break up because Lionpaw, Hollypaw, and Jaypaw really aren't their kids! They are actually Leafpool's and Crowfeather's kits. But Leafpool handed them over to her sister because she was a medicine cat. She wanted Brambleclaw and Squirrelflight to raise them. But he found out. I won't tell you how though, because I don't want it all to spoiled.
End of Spoiler Warning
Because when Brambleclaw began to ignore her, Squirelflight began paying attention to Ashfur to make Brambleclaw jealous. When Brambleclaw and Squirelflight get together, she leaves Ashfur heartbroken.
She doesn't. *spoiler alert* Firestar dies of old age and Brambleclaw is appointed Bramblestar, and Squirelflight becomes his deputy.
Leafpool is.
Squirrelflight and Brambleclaw left on their journey to the sun-drown place together with cats from other clans. On their journey their and back, they get very close without realizing it.Squirrelflight has Hollypaw, Jaypaw, and Lionpaw. (Though they are not really their kits) Brambleclaw and Squirrelpaw break up. But get back together. They didn't have kits of their own yet though.
if you forget you are a Jew a gentile will remind you
As of yet, Brambleclaw is not dead.
Yes, Squirrelflight and Brambleclaw knew that Jayfeather was not their biological kit. Squirrelflight had taken Jaykit (Jayfeather) from Leafpool, her sister, to raise as their own after Leafpool was unable to care for him due to her role as a medicine cat. Brambleclaw was also aware of the situation and supported Squirrelflight in this decision.
Brambleclaw never died.
Yes, at the official warrrior cats homepage (linked below). But these games can get pretty boring so I would suggest going to this site to download a free mini game that lets you play the role of Firestar for the first game, and Brambleclaw and Squirelflight for the second one. It is linked below as Warrior Cats Game.
They might be since Firestar's daughter, Squirrelflight, is Brambleclaw's mate.
He doesn't he just thought Graystripe would come eventually.Graystripe did come. Yea, but only after Brambleclaw convinced him He still believed that Graystripe was still alive (in which he was). And he didn't want to break the Warrior Code. But Starclan finally sent Leafpool a dream saying that Brambleclaw shall become deputy. yea, I kinda know
Other than leafpool and squirelflight no,but he has grandchildren.Hollyleaf,Jayfeather,Lionblaze