Dreaming about hugging someone you find attractive can symbolize your desire for connection, intimacy, or affection. The fact that the girl is someone you don’t know may indicate an exploration of new relationships or aspects of your romantic life.

The imagery of her being sweaty could represent emotional vulnerability or the intensity of the moment. Sweat often signifies hard work or exertion, so it might suggest that you are putting effort into your emotional or romantic pursuits. Massaging her shoulders and back could symbolize your desire to relieve someone's stress or support them, which reflects nurturing qualities within you.

Overall, this dream may be highlighting your yearning for a deeper connection with someone, possibly exploring the potential for new relationships, or it could be a reflection of your own feelings of vulnerability and the need for closeness. Consider how these themes resonate with your waking life and what steps you might take to seek out or nurture relationships that fulfill these desires.