(someone's) heart misses/skips a beat

if someone's heart misses a beat, they suddenly feel so excited or frightened that their heart beats faster.

Ben walked into the room and her heart skipped a beat.

• your name in lights
• your nearest and dearest
• your neck of the woods
• your nose is out of joint
• your own man
• your own person
• your own woman
• your own worst enemy
• your pound of flesh
• your road to Damascus
• your salad days
• your sea legs
• your smart mouth
• yours truly
• your tail between legs
• your tail between your legs
• your two cents
• your two cents worth
• your way out of a paper bag
• your wedding tackle
• your whole world came crashing down around
• your whole world came crashing down around you
• you said it
• You scratch my back and I'll scratch yours.
• You should be so lucky!