刚查了ChatGPT, 才弄懂啥意思.

FWB stands for "Friends with Benefits". It refers to a type of casual relationship where two people engage in sexual activity without being in a committed romantic relationship. The two individuals may consider themselves friends, but their relationship is primarily based on physical intimacy and there is usually no expectation of emotional attachment or exclusivity. FWB arrangements can be consensual and enjoyable for both parties as long as there is clear communication, mutual respect, and both parties are on the same page regarding the nature of their relationship.