The Introduction: Henry was a a sweet, down-on-his-luck patient who was living with a death sentence because of lack of insurance. That was, until Teddy came up with a frankly insane proposal — as in marriage proposal.
The Developing Romance: Teddy may have married Henry as a random act of kindness, but it didn't take long for his charm to steal her heart. Honestly, can you blame her?
Of Course, It Took a While... Teddy tried to keep her relationship with Henry strictly platonic while dating Dr. Andrew Perkins, but come on. Webber (James Pickens Jr.) may have thought Henry was the underdog, but we knew he would come out on top.
A Tragic Ending: And he did come out on top, until his underlying medical problems ruined everything. Henry and Teddy sometimes fought, but mostly they were adorable to the end. This is their last scene together: