No, as a matter of fact, they were best friends up until the SquirrelXBrambleXAsh incident.
In a way, yes. When she has a fight with Brambleclaw in which she stays mad at him and Brambleclaw is overcome with unhappiness, Squirrelflight turns to Ashfur and loves him. But when she makes up with Brambleclaw and loves him again. Ashfur is furious and heartbroken.
No it is Brambleclaw
Ashfur seems to have directed his hate to Squirrelflight. It can be assumed he believes that Squirrelflight, opting to choose Brambleclaw over Ashfur, was the one who was at fault. Maybe he thought Brambleclaw was an innocent bystander or something. If he did feel any hatred toward him, it's possible he simply chose to hate Squirrelflight instead, because he still loves her. Love hate situation.
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.
No, he loved Squirrelflight, but was denied because she chose Brambleclaw over Ashfur.
*Spoiler Alert* No Hollyleaf does.
Ashfur distrusts Brambleclaw because after Brambleclaw and Squirrleflight fought Squirrleflight beagan to like ashfur. then after the badger attack Squirrleflight and Brambleclaw grew close again. Leafpool had a vision of two pairs of paw prints on the lake growing into to one path and at the end of the path was Brambleclaw and Squirrleflight. So Squirrleflight told Ashfur that she and Brambleclaw were meant to be mates from StarClan and he still didnt like the idea
It is a form of opinion on whether Brambleclaw or Ashfur is better for Squirrelflight. But if you havent read up to Sunrise then i dont want to ruin it for you but before that squirrelflight chose brambleclaw.
no
Ashfur was mad at Squirrelflight for choosing Brambleclaw over him and he wanted revenge.
Ashfur for a while, but she chooses Brambleclaw as her mate in the end.
No, but he tries to kill Hollyleaf, Jayfeather, and Lionblaze because he thought that if Squirrelflight watched her kits die then she would go to Ashfur. But Hollyleaf, Jayfeather, and Lionblaze are not Squirrelflight and Brambleclaw's kits.