The song "Bahagia Bersamamu" by Haico revolves around the feeling of happiness and contentment that comes from being with the one you love. The lyrics express the desire to be with someone special, who guides and supports you through life. The singer declares their love for this person, proclaiming that they do not want anyone else. The chorus of the song talks about the joy that the singer feels when they are with the person they love, and how they want them to stay with them forever, even as they grow old. The lyrics talk about the importance of this special person in their life, and how their love brings peace and happiness to their heart. Overall, "Bahagia Bersamamu" is a love song that celebrates the happiness that comes from being in a loving relationship. The lyrics express the desire to hold on to the person they love and to spend their lives together, cherishing each moment and creating happy memories.