>>97110258I don't think she really knew for sure until Into the Bunker.
Let's not act though like Alex knew how to write shipping and it's Wendy's fault. Dipper seemed to hook up with her just fine in the first time travel episode, he ended up having to sacrifice that because Mabel wanted to win a pig.
Every time I think back about this shit I just want to slice Hirsch's neck open and pull his tongue through it, that's a cuban necktie.