This is just my personal opinion. Tell me what you think about it and your own favourites! List like these are pretty hard, but I just picked some I remember very well that also use to make me teary as well.
1. If I Never Knew You - Pocahontas
This song is just so perfect and beautiful, and it's amazing how wonderful Mel sings! It's the perfect amor song!
2. Goodbye May Seem Forever - The raposa and the Hound
It makes me so teary every time! It was one of my favourite songs when I was little.