Questions about example sentences with, and the definition and usage of "Valentines"

A: × It's Valentines day today.
✓ It's Valentines Day today.

× My daughters made cockies for me, because I don't like chocorate.
✓ My daughters made cookies for me because I don't like chocolate.

× It was so tasty, tasts of Anko, which is Japdnese sweet beans.
✓ They were very tasty, tasting like Anko, which are Japanese sweet beans.

× They attached message card as well.
✓ They attached a card as well.

× I felt I'm very happy father.
✓ I feel like I'm a very happy father.

Happy Valentine's Day!

A: Just a little side note, though: if you’re typing this, English speakers generally wouldn’t capitalize ‘lots of love’. Other than that, it sounds fine. :)

A: I bought myself Valentine's day chocolates.
残念ですね。。。

A: Flowers, chocolate/candy, teddy bears, and sometimes jewelry are common^^