Accidental checkmate

Playing 1.0 blitz, I got my opponent in mate accidentally, I just took a piece and bam, mate.
I thought it was with a share.

[Event "Rated Bullet game"]
[Site "lichess.org/jOshpB9v"]
[Date "2019.06.28"] cu
[Round "-"]
[White "jzisbadatchess"]
[Black "charlie2charlie"]
[Result "0-1"]
[UTCDate "2019.06.28"]
[UTCTime "00:18:11"]
[WhiteElo "1406"]
[BlackElo "1417"]
[WhiteRatingDiff "-10"]
[BlackRatingDiff "+10"]
[Variant "Standard"]
[TimeControl "60+0"]
[ECO "A40"]
[Opening "Englund Gambit Complex: Englund Gambit"]
[Termination "Normal"]

1. d4 { [%clk 0:01:00] } e5 { [%clk 0:01:00] } 2. dxe5 { [%clk 0:00:59] } Nc6 { [%clk 0:00:59] } 3. Nf3 { [%clk 0:00:58] } Qe7 { [%clk 0:00:59] } 4. Nc3 { [%clk 0:00:56] } Nxe5 { [%clk 0:00:56] } 5. g3 { [%clk 0:00:56] } Nxf3# { [%clk 0:00:55] } 0-1

That's why people say:
If you spot a check, then give it. For it could be mate!

I don't believe one should check the opponent king and hope that a mate may follow. For all the times accidental mates may follow, there are as many times that you may lose a piece without compensation.

Charlie2charlie, in your specific game, congratulations for the quick mate! I don't play bullet myself, but I assume that in any normal game you would be behind in development after the opening. So be careful that these tactics don't turn against you.

Yes, bullet is a different game of sorts.