Agreed, and it doesn't help that there's this whole spread of things that might not be crossing your internal lines, but the lines other people project onto the situation.
This isn't the greatest example, because I'm apparently in the minority, but I never got the memo about how big a deal it is to say "I love you." I could hug my LO and honestly tell her that I love her dearly, without any pain of conscience or hazard of heart. If I did that in front of people, though, some in my friend group would completely flip out... because to them, "I love you" is basically only for families and for when you're about to get engaged.
Then, some of those same people would encourage me to share an activity with LO that is so intimate for me, it would be like trying to cuddle half-naked "as friends." I've had to avoid it at the cost of being thought snobbish.
It's a jungle out there, and snake-pits abound.