I can't say they handled amourshipping badly, because they didn't handle amourshipping at all. They didn't erase its existence but they also didn't acknowledge it, tho you might see that scene of her staring into the sunset as a hint.
At the end of the day, it wasn't an episode about Serena nor amourshipping, it was all about Chloe.
Which only makes me wish Serena had gotten at least one comeback episode or special that was actually about her. Then maybe amourshipping could have been properly addressed.
Now we can only hope the following episodes will do them justice. Just don't keep your hopes *too* high as it's better to prepare for disappointment and be pleasantly surprised.