Greg Bretz

Taylor Swift gave a “Happy Birthday” shout out to snowboarder Greg Bretz after he crushed HARD on her. Greg even went on TMZ Hollywood Sports to send a shout out. Now can he close the deal? Taylor's waiting! So are we, actually.

Taylor Swift just gave a pro snowboarder a heart attack we're guessing ... 'cause all Greg Bretz wanted for his birthday was for Taylor to show him some love -- and it just happened. T Swizzle recorded a shout out to Greg -- posted by a mutual friend of theirs -- telling him, "Happy birthday,…