London System Game 2
When Black plays ...Bd6 and swaps bishops on f4, White retains a bind due to his control of e5. But in this game, I mistimed it as Black could have played ...Qd6! double attacking f4 and the check on b4. This would have forced Qd2 with an equal position.
A good point to remember is: It's always okay to play Bg3 when faced with ...Bd6, but leaving your bishop on f4 is only good if you are sure you can deal with the ...Qd6 double attack trick from Black.