Board Thread:General Discussion/@comment-43891221-20190924195001/@comment-27745396-20191022083858

For some reason people like to ship angsty emo kid with troubled past (in this case Qrow and Raven) with carefree sunshine kid (Tai and Summer based on personality fandom has given to her). People almost never ship two happy characters with each other unless they have been shown to be cute on screen and even then it usually isn't the most popular ship. So of course they threw Qrow and Raven in the mix.

Plus unlike Tai, both Qrow and Raven have mentioned Summer and we can kind of assume what kind of relationship they had with her. Building a relationship from facts that they had a kid together, Tai got depressed after Summer's death and he was hanging on the background when Ruby was visiting her grave is a bit hard.