I think I'm more accepting of it as an adult because I've improved so much (5 years old vs. 24 years old). I believe something really important to this mindset is reminding yourself you are more fluent than you were last week, or last year, or 5 years ago. I also had a very severe stutter as a child, and nothing now could compare to the struggles I had then. When I was about 9, I almost stopped speaking completely. Finding an SLP specialized in fluency and not just an SLP helped immensely. I know there is also a stuttering support group in my hometown at the institute I went for for therapy. Does your boyfriend attend speech therapy? Are there any support groups in your area? Just some ideas to start with. Good on you for trying to understand it. It can feel isolating at times and embarrassing. Especially when people are ignorant and tease you/bully you/rush you/finish your sentences.