Bh4 - black has weak light squares and that knight seems very akward. White should be fine.
The 9...h5!? English Attack

wait can't black just play...
Sure he can! After 10.Bxe7 Qxe7 11.f3(h3) Nf6 12.0-0-0, he has almost achieved already to lose the d6 pawn for nothing.
what about?
Houdini 1.5 gives white a 0.59 advantage on my computer after f6, but I think it overestimates black's position.

Amazingly houdini doesn't think black is that much worse after 9...Nf6. I think my computer might be broken.

what about?
Ah, yes. This looks crushing. I think white will just resign...
Have you ever thought giving up chess and being involved in something you can eventually understand?
Brutal haha

what about?
Ah, yes. This looks crushing. I think white will just resign...
Have you ever thought giving up chess and being involved in something you can eventually understand?
your a bastard you know that right

wait can't black just play...
Sure he can! After 10.Bxe7 Qxe7 11.f3(h3) Nf6 12.0-0-0, he has almost achieved already to lose the d6 pawn for nothing.
what about? (9. Bg5 f6)
Your g4 knight is then stuck out of place when it should be defending on f6. Now white just plays Bh4 and gets a bonus option of planting a knight on d5 along with other moves like 0-0-0 or f3. Black is likely going to lose that game.
in no way is black losing i think you overestimate whites position
wait can't black just play...
Sure he can! After 10.Bxe7 Qxe7 11.f3(h3) Nf6 12.0-0-0, he has almost achieved already to lose the d6 pawn for nothing.
what about?