[spoilers] Harry and Ruth. The Wonder Years.

[lottanyman]

I think the characters, at least Harry and Ruth, have very well been aware of their love for a long time. Harry wanted to say it just before Ruth had to leave in series 5 and Ruth knew what he wanted to say but didn't let him because that would have made things even harder (for her or for them both I'm not sure). So this time Ruth just spit the word out directly in her anger over Albany.

As for Lucas knowing about this or sensing they love each other, this may be something to ponder if other people on the Grid could really know about as Harry and Ruth always tried to hide it but otherwise in the beginning of series 5 also Juliet had been aware of Ruth being in love with Harry and was asking him if he'd also loved her.