As a gay guy myself I definitely imagine some of the male characters in this game as being into other men. It's fun. There's even hot art out there in some cases. Yet that isn't necessarily canon and shouldn't be pushed as such - especially in cases where strong romantic feelings for the opposite gender have been established.

It doesn't rule them out as being bisexual, of course, but there's always been something unsettling to me about people trying to erase a character's explicit interest in the opposite sex just because they themselves would prefer to imagine them as gay.

Thancred has explicitly shown interest in women on multiple occasions, Estinien and Ysayle arguably had a spark between them and Alphinaud is underage so any 'shipping' between him and other characters stands to get weird and creepy pretty quickly.