Boyfriend Spending the Night

So I’m 15 and so is my boyfriend and we’ve been together 3 months. We’re long distance (3 hours) and my mom let him spend the night at our house. We slept in different rooms on different floors. My mom trusts me and him. She taped his door just to be sure (even though I know we could’ve snuck our anyway). We stayed in our own rooms and didn’t do anything. Was this bad for my mom to allow? I feel guilty because not many parents allow it. I’m not sure why I feel guilty but I do. Does anyone else’s parents allow similar stuff?

Edit: I forgot to add the my dad was sleeping on the couch near where my boyfriend was sleeping so he would have heard if anything happened.