Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nd7/4. Bc4/4...Ngf6/5. dxe5/5...Nxe5/6. Nxe5/6...dxe5/7. Bxf7/7...Kxf7

7.Kxf7
Ke7 doesn't make any sense, as who wants an exposed king (not to mention the lost pawn) with the queens on the board? Therefore, the best move is 7...Kxf7. White will, obviously play Qxd8. Black hasn't lost his queen due to 8...Bb4+.