Marta, this dream where your crush admits they have romantic feelings for you holds significant meaning and reflects various aspects of your subconscious mind. When someone you care about openly expresses their feelings, it often symbolizes a desire for emotional connection and validation in your waking life. Given your current status as single, this dream could be mirroring your inner yearnings for companionship and the need to feel cherished and understood by someone special.
The admission of romantic feelings by your crush in the dream suggests that you might be grappling with feelings of self-worth and the desire to be valued. This could be tied to your experiences and the struggles you've faced, such as substance abuse and traumatic experiences. These past events may have impacted your self-esteem, and the dream is a way for your mind to process these emotions and seek positive affirmation.
Furthermore, this dream can also be seen as a manifestation of your hopes and aspirations. The joy and relief that come from someone acknowledging their feelings for you might represent your longing for happiness and joyful activities, which you mentioned are rare in your current state. Your subconscious mind is possibly urging you to embrace opportunities for joy and to seek out experiences that bring you genuine happiness.
Considering your mental health background, including ADHD and other challenges, the dream might also be highlighting a need for stability and support in your personal life.