Love languages. Yep, I think we all start out rather clueless in this regard. Have you read the book - The Five Love Languages. It is quite good. Even has a quiz at the end you can take.
It is pretty interesting, and of course knowledge and growth is a good thing.
This is definitely on my recommended list of books.
DnJ
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.