The party romances are especially awkward since some companions have flirted with each other (Gale with Shadowheart, Astarion with Gale) but never with the player character as far as I experienced. Suddenly having half the camp go "we'll bang, okay?" without any buildup was a disorienting let down.
I adore romance in games, so am reluctant to complain about it when honestly I'm just happy it's included. But the anticlimactic intimacy scenes speak to a bigger problem with companions, I think.
There aren't enough "little" moments with the party to really care that much about them, and the moments currently included are completely miss-able. For example, I completely went from hating to adoring Astarion after the giddy way he reacted to Ethel at the tiefling camp. When I replayed, that reaction triggered for Shadowheart instead and I lost out on appreciating a large part of Astarion's chaotic-playful personality.
