Selecting a romantic birthday gift for your girlfriend who is upset with you requires sensitivity and an understanding of her feelings. First and foremost, address the issues that have caused the upset and apologize sincerely if necessary. Then, choose a gift that signifies your commitment to making things right and rekindling the romance. Consider a heartfelt handwritten letter expressing your love and desire to work things out. A romantic dinner at her favorite restaurant or a surprise picnic with her preferred foods can also help set a positive and intimate tone for her birthday celebration.