Usually you can pay attention to what your girlfriend likes, and then choose according to her interests. When giving your girlfriend a gift, you must match some sweet words to let your girlfriend feel your intentions.
You can send your girlfriend a bunch of roses on Valentine's Day. Roses of different colors have different degrees of emotional expression.
For example, red roses represent deep love for you, pink roses represent emotional hearts and declarations of love, and blue roses represent eternal love. It is suggested to choose according to the girlfriend's personality.