The most common and most likely answer to this crossword clue is the 10 letter word AFICIONADO
A
F
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More clues leading to the result AFICIONADO
- Trouble after an invention puts off Tesla's foremost supporter
- An oaf at first implying Covid not very problematic — nut!
- A heartless lie, trouble for lover
- A heartless romance leads to bother for lover
- Fan finds trouble follows a heartless lie
- One who loves a timeless story and a party
- Lover in trouble after a heartless lie
- Articles about timeless story to suffice for fan
- A heartless falsehood, difficulty for ardent follower
- 10 across’s ultimate invention that’s timeless, followed by a complete devotee
Buddy explains!

The straight part
We know that "Lover" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lover = aficionado.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 AFICIONADO mean?
AFICIONADO noun- An amateur bullfighter.
- A person who likes, knows about, and appreciates a particular interest or activity (originally bullfighting); a fan or devotee.