Don’t hide your feelings. Learn to share them, empathize with each other, and be supportive. To do so, you both need to be honest with each other, and trust that both of you will be supportive of one another. To do so, you will need to learn how to communicate, which means how to express yourself and how to listen to your partner with sympathy, react, and compromise on disagreements when they inevitably show up.
Appreciate what you see as each other’s best features. Both body and personality. Compliment them when it is due and encourage their dreams and passions. Don’t let things get stale, have adventures, go on vacations to new places, try new things together.