Brief Intervention for Tobacco and Alcohol Risk Reduction for Couple During Breast Cancer Treatment.

Inclusion Criteria: * for the breast cancer patient: patients treated for a first breast cancer; Karnofsky Index\> 70; * for both patient and partner: ≥18 years old; smoking more than or equal to 1 cigarette/day; * without ongoing treatment for current substance-related disorders; having a good understanding of the French language; * able to express consent to benefit from intervention focused on smoking cessation; * having an email address and internet access at home. Exclusion Criteria: * Refusal of the patient that his/her partner participates or refusal of the partner to participate * Individual deprived of liberty, under guardianship or trusteeship * Individual with a dementia or psychiatric disorder that could compromise informed consent and commitment in different times of the study