While I'm on the topic of the Jerome Gambit Declined, I thought I would dig a little deeper...
MrJoker - david2play
2 12 blitz, Internet Chess Club, 2011
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8
The Jerome Gambit Declined.
Certainly, strongest for Black was 4...Kxf7, but on rare occasions the defender decides If you want me to take the Bishop, I won't take the Bishop. That being the case in this game, the Black King is probably better off on f8 as opposed to e7.
5.Bxg8
The typical argument can otherwise ensue, where best to retreat the Bishop, d5, c4 or b3?
MrJoker's solution, of course, is playable. I will leave the discussion of 5.b3, 5.c3, 5.Nc3, 5.d3, 5.d4, 5.Nxe5, 5.Qe2, 5.0-0, 5.Ng5 and 5.Bh5 (all are in The Database) for later posts.
5... Kxg8 6.O-O
A reasonable move, played by HauntedKnight, Petasluk, shugart, Superpippo, Wall, and others, as well.
6...d6
For 6...Qf6 see Wall, Bill - Guest558953, PlayChess.com, 2017 (1-0, 15).
Looking at the diagram, you can ask yourself What does Black have for his gambitted pawn? Not very much - but he is playing his own game.
7.c3 h6 8.d4 exd4 9.cxd4 Bb4
Better to have retreated the Bishop, as White shows.
10.Qb3+ Kh7 11.d5 Ba5 12.dxc6 bxc6 13.Nc3 Re8 14.Bd2 Bb6 15.Rad1 Ba6
Black is developing, but White, as a Jerome Gambit player, must enjoy being the player with the extra piece.
16.Rfe1 Qf6 17.Be3 Ba518.Bd4 Black forfeited on time
Black's future was not bright, anyhow.