Sexuality education (SE) in France presents crucial challenges, with significant room for improvement to better meet the needs of young people and contribute to the prevention of sexual violence. This inductive exploratory study aims to understand how French young people learn about sexuality and mobilize this knowledge during their first sexual encounters, particularly with regard to consent practices. To this end, we conducted 14 semi-structured interviews with young adults in the Toulouse and Paris regions. The interviews were analyzed using the IPA (Interpretative Phenomenological Analysis) method. The results reveal that participants' main sources of information are their peers and pornography, widely favored for their accessibility and attractiveness. On average, participants reported having received only two sessions of SE on average, well below the 21 required by French law. With regard to consent, the majority described relying on implicit and contextual signals. However, five participants recalled experiences of non-consensual sexual gestures or intercourse, including two in the context of a couple's first relationship. These accounts highlight the limitations of current approaches focusing on explicit communication of consent, particularly in situations of sexual coercion. In conclusion, this study highlights the urgent need to reinforce SE in France, both in terms of frequency and content. We recommend targeting the development of complex psychosocial skills, such as emotion management, impulsivity and empathy, for more effective prevention of sexual violence tailored to the realities of young people.