Shadowheart is possibly the most popular romance option in Baldur’s Gate 3. Shadowheart holds great respect for characters who uphold moral principles and strive to do what's right. She greatly values acts of kindness and assistance towards those in need, and such actions tend to raise her approval. If you are avoiding evil actions during your run, you should have an easy time getting close to her.
Tips to romance Shadowheart in Baldur’s Gate 3
The one thing you need to know if you want to make Shadowheart your romance option in Baldur’s Gate 3 is that she vehemently opposes any collaboration with the forces of evil, even if it might seemingly serve a greater purpose. During the early stages of the game, seeking aid from the goblins or relying on Raphael to remove the Illithid parasites would lead to her disapproval.
Be kind and compassionate. Shadowheart has been through a lot, so she's drawn to people who are kind and compassionate. Choose dialogue options that show that you care about her and her well-being.
Be respectful of her faith. Shadowheart is a devout follower of Shar, so it's important to be respectful of her faith. Don't make fun of her beliefs or try to convert her to another religion.
Be supportive. Shadowheart is going through a lot, so she needs someone who is supportive. Be there for her when she needs you, and offer her your help. If you complete her main quest, you should not go against her during the final moments of the Nightsong quest.
Be honest with her. Shadowheart is a very perceptive person, so she'll be able to tell if you're not being honest with her. Be honest about your feelings for her, and don't try to play games.
Be patient. It takes time to build a relationship with Shadowheart. Don't expect her to fall in love with you overnight. Just be patient and keep showing her that you care. She is one of the lawful good characters so making “evil” decisions in your playthrough can negatively affect your chances of making her your partner.
Here are some specific dialogue options that you can choose to increase your approval with Shadowheart:
When she asks you about your faith, tell her that you're open to learning about Shar.
When she talks about her past, listen to her and offer your support.
When she asks you for help, offer it to her.
When she's feeling down, tell her that you believe in her.
When she's feeling lost, offer her your guidance.
If you follow these tips, you'll be well on your way to romancing Shadowheart in Baldur's Gate 3. If you keep developing a positive relationship with Shadowheart, you will eventually be able to marry her.