I dont persinally have one for eridan at this time but i can totally relate to the first part. (Except for some reason i tend to only heavily ship gay pairings, not really sure why exactly)<<<Hahahaha welcome to fandoms- most of your ships will be gay.
Because grown up Dipper is the awesome Dipper. did I mention I was their age when the show started. meaning years wise he'd probably be sixteen by now (Despite the fact that the show ended a few months ago and they were Gravity Falls