Can someone help me here?

You should always try to make multipurpose moves, and ignore your opponents threats whenever possible. By castling, you just keep doing what you want, and black can't take of course.

what's so special about that line though? Losing back the piece with 1.Bd5 Qxe2+ 2.Kxe2 d3+ is what I meant. On Nd3+ Kf1 white is still a piece up, with forced queen exchange.

Just to be sure. The suggested O-O is due to ... QxBe4 ; Re1 winning in the approximate material count.
If we are going for wild 1. Bg5 QxBe4+ 2. Kd2 Ne5 3. Re1 Qd3+ 4. Kc1 QxQd1+ 5. KxQd1 f6 6. NxNe5 f6xNe5 7. Rxe5+
1. Qe2 !? Nc5 2. Ne5 !!?

Alaways ask youself: "What is my opponent trying to do?"
No shit Sherlock. Black is pinning on the e-file and we are going to have some fun by exploring whether white is actually counter-pinning on the e-file because when the black knight moves white has the counter Bc6+

#13. ( thanks I was bitching at you to reply on msgs when you had, sorry ).
Oh dear yes. White has to sacrifice the piece he was ahead when he choose Qe2 over O-O
4. f4 fxNe5 5. f4xe5
I want to grab the d-pawn but think it could blow up in my face.
Meanwhile, I need a rule change that if ... Qf7 white can castle "over the check" on king side.