I've done more than my fair share of thinking about Emmrich and I've decided that the man falls in love a half a dozen times a day. With people, with spirits, with ideas, with books, with overall life
For Emmrich, falling in love is easy
Staying in love? That's a completely different story. He falls out of love just as easily as he falls in love. To be honest, he's never truly stayed in love for more than a couple of months
You can actually see in these screenshots the moment he falls in love with Rook. (Look at that side eye towards Rook when he's walking towards Bellara) A Grey Warden? To see him? What adventure! What a bit of color thrown into the monotony that has become his life!
Emmrich would never presume to do anything about falling in love with Rook, of course. It was meant to be his own private little joy while he waits for the bloom to fade and something else to catch his attention
But then every time she flirts or does something inspirational, he unexpectedly finds himself falling in love all over again. And then when it's clear that she's falling, too?
Well, it absolutely terrifies him. But that's a story for a different day