I find this strange, though. Stormfur had a crush on Squirrelflight first, but he's related to her. Spottedleaf's brother and sister, Willowpelt and Patchpelt, had Greystripe, who had Stormfur and Feathertail with Silverstream. Spottedleaf's brother, Redtail, had Sandstorm with Brindleface, who had Squirrelflight and Leafpool with FireStar. Then Ashfur crushed on her second, and he's the son of Brindleface and Whitestorm, making Sootleaf, Rainwhisker, and Sorretail his Uncles-Aunt-siblings (I'm not exactly sure if this is true, because on the Warriors website since I last checked, Whitestorm had Ashfur and Ferncloud with Brindleface, but then on another site it says there's no Father to Ashfur and Ferncloud). THEN Squirrelflight becomes mates with BrambleStar! And BrambleStar is the son of TigerStar, who's Mother is Leopardfoot, who's sister is Spottedleaf!
Spottedleaf's brother and sister, Willowpelt and Patchpelt, had Greystripe, who had Stormfur. Spottedleaf's brother, Redtail, had Sandstorm, who had Squirrelflight. So Stormfur and Squirrelflight are kinda cousins.
Ashfur is Sandstorm's half-brother. So he would be Squirrelflight's half-uncle. I asked my mom if they could have become mates, and my mom said that they weren't really related, so they could have been together if Squirrelflight hadn't been such a bitch and picked Brambleclaw.