If Harry Kim was to have a stable romantic relationship, with whom he would have it?

Harry Kim is a character that had it bad on Voyager. I think only Kes can qualify to get off worse, and even then, it is only because of what happened post Season 3. But Harry suffered on a semi-regular basis, and his love life is one of the places he suffered the most. 

However, if you were to change that, if you were to give him a stable relationship, with whom would you make it?

Personally, I think either Seven of Nine or Libby.