Is it bad to have incest fantasies without actually having any

File: Autism_Level.jpg (24KB, 960x422px) Image search: [Google]

24KB, 960x422px

Is it bad to have incest fantasies without actually having any siblings? It's not like I can actually act on them but I've got some weird wanna-be sister complex where I'm just obsessed with the idea of having a sister and caring for and protecting them aswell as having an intimate relationship with them. It's something I've always thought about and I even kinda fulfilled this through my best childhood friend who I've always looked up to as a sister figure and even ended up fucking her. But I can't shrug off the feeling that what it's wrong and that it's more messed up than I realize. Feel free to share any experiences you have with stuff like this, it'd be a bit calming to know I'm not the only one who has fantasies like that.