This study aims to explore and compare the reaction of long-term care staff towards situations of sexual intercourse in which one or both partners have dementia.Participants were 538 staff members at 28 Portuguese long-term care facilities. Data were collected using a printed questionnaire with seven vignettes with situations related to the sexuality of LTCF residents. In this study, three of these vignettes were analysed with situations in which residents were having relationships in their bedrooms: (1) one male resident and one female resident; (2) two residents with dementia;(3) two residents, one of them with dementia. For each of the vignettes, participants are asked what they think their 'colleagues' would do in each vignette, i.e. 'What do you think most of your colleagues would do?' The results revealed that when sexual relationships involved both partners living with dementia, the most selected reaction was 'Comment on what happened with supervision or direction', which may suggest that the situation was perceived as difficult or problematic. The most restrictive reactions were most often chosen when only one partner had dementia. This study suggests the need to improve and provide training, so that staff have knowledge and strategies that allow people living with dementia to preserve their sexual rights in long-term care facilities.