In NLP, mental health conditions are often modeled as isolated phenomena, without interpersonal context. We use Reddit posts about long-distance relationships to capture both mental health distress and associated relational triggers. We introduce the Relational Stress and Psychiatry Corpus (RSPC), containing 1,799 Reddit posts annotated by psychiatrists for diagnostic categories, including the most prevalent mood disorders (anxiety and depression), relational stressor triggers, and indications of relationship phase. We benchmark seven fine-tuned transformer models and five large language models across the tasks of multi-label disorder classification, relational trigger detection, and temporal phase prediction. We find clear task-dependent differences between model families, with Claude-3-Haiku achieving the best disorder classification performance (Macro-F1 = 0.538) and GPT-4o obtaining the strongest relational trigger detection performance (Macro-F1 = 0.519), suggesting distinct model capabilities. We further find strong associations between anxiety disorders and chronic relational uncertainty. Overall, RSPC establishes a benchmark for NLP tasks that consider relational context and supports a shift from individual-centric to context-aware mental health modeling, capturing the social and temporal dynamics of distress.

The rise of online platforms has facilitated covert forms of explicit content, which pose significant challenges for detection and regulation. Often using coded language to bypass moderation, this content erodes user trust and may be associated with scam-related risks, posing direct financial and personal risks. In this study, we map the landscape of online explicit content posts, focusing on their categorization, linguistic strategies, and temporal and behavioral patterns as they appear within mainstream platform reddit. We investigated five distinct content categories including Virtual Services (VS), Physical Services (PS), Exhibitionism (Ex), Couples and Group Interactions (CGI), and Content Creation and Sales (CCS) and performedmed large-scale experimentation using state-of-the-art large language models (LLMs) such as GPT-4, LLaMA 3.3-70B-Instruct, Gemini 1.5 Flash, Mistral 8×7B, Qwen 2.5 Turbo, and Claude 3.5 Haiku. Our work demonstrates that a nuanced classification of these services requires moving beyond simple keywords, and we establish that expressive signals such as sentiment, emotion, and tone are critical features for accurate detection. Our analysis reveals the distinct behavioral and psychosocial expression patterns that characterize each service category, providing a robust framework for future moderation.