The phrase "miracles do happen" suggests that the speaker views meeting this person as a rare and extraordinary event, something that defies ordinary expectations.
The statement "because I met you" underscores the idea that the person's presence in the speaker's life is the very reason they now believe in miracles. It implies that this individual has had a transformative and deeply meaningful impact on the speaker's life.
In essence, this statement beautifully conveys the idea that love and meaningful connections can be so powerful and extraordinary that they feel like miracles. It reflects the depth of appreciation and gratitude for the presence of someone special, who has brought a sense of wonder and magic into the speaker's life.