Delusions are getting worse and worse

I grew up with strict and overprotective parents. I was confined at home 80% of my childhood because they thought everybody was a negative influence to me. I have zero friends from elementary and high school. I am autistic and struggled making friends but it didn't help that they isolated me. I couldn't go to a classmate's or friend's house even for group works because they'd be scared of something bad happening. I couldn't bring classmates home either because they'd get annoyed they were being "rude". I never experienced sleep overs or traveling with friends. I couldn't even join field trips. Hence, the very few friends I made drifted apart.

Since childhood, I've had these delusions or imaginary friends. I made Facebook accounts in high school and pretended they were real. It's that bad.

I have a handful of friends I made from college and work that I'm super thankful for. But I don't have a ride-or-die buddy that most people have. I managed to get married somehow. I love my husband and my daughter. My mental health started getting better when we moved out and started building our home. I thought I was finally okay. However, I've been watching movies lately that made me lament over the childhood I didn't have because of my parents. I obviously stopped but I started having these delusions again. I keep thinking about the imaginary friends I grew up daydreaming of. I learned how to lucid dream so I can experience being with them. My therapist is telling me to let go. But it's the only way I know to fill the emptiness I feel.

I often cry myself to sleep. I don't know what to do anymore.