I remember an indie film from the early 2000s. I specifically remember a girl using a boy that was a bit of a loner for sex. But, she would always blindfold him before doing anything. When he wanted to have the blindfold off, she admitted she wanted to get good at sex for someone she loves in the future.
I have NO idea what that movie was called. I’d watch so many obscure titles back then, having trouble locating what that one was called.
I’m pretty sure it is Thumbsucker (2005):
https://en.wikipedia.org/wiki/Thumbsucker_(film)