The most common and most likely answer to this crossword clue is the 8 letter word SHIPPING
S
H
I
P
P
I
N
G
More clues leading to the result SHIPPING
Buddy explains!

The straight part
We know that "Rooting for a romance between/sending packages" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rooting for a romance between/sending packages = shipping.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SHIPPING mean?
SHIPPING noun- The transportation of goods.
- The body of ships belonging to one nation, port or industry.
- Passage or transport on a ship.
- The cost of sending an item or package via postal services.
- Navigation.
- To send by water-borne transport.
- To send (a parcel or container) to a recipient (by any means of transport).
- To release a product to vendors; to launch.
- To engage to serve on board a vessel.
- To embark on a ship.
- To put in its place.
- To take in (water) over the sides of a vessel.
- To pass (from one person to another).
- To go all in.
- To trade or send a player to another team.
- To bungle a kick and give the opposing team possession.
- To support or approve of a fictional romantic relationship between two characters, either real or themselves fictional, typically in fan fiction.