My girlfriend and my little brother

Good morning to all, this is the first time I post here and I wanted to comment on something that happened to me yesterday. I was at home with my girlfriend Carolina and my little brother Pablo. My girlfriend is 25 years old and my little brother is 15 years old, I'm 26. I've been in a relationship with her for 4 years and we live together, we're getting married this year.

My little brother is a virgin and doesn't even kiss a girl. With my girlfriend, we noticed he was looking at her a lot, she was wearing a skirt and a t-shirt. It gave me something to think about but then it occurred to us to help my little brother who was having trouble. I agreed. First, my girlfriend took off her skirt and t-shirt and was left in her bra and panties, my little brother was looking at her and was really enjoying himself. Then he undressed her, she was standing up, the truth is that it surprised me because I thought with 15 years old she would be smaller but she was doing quite well. With shame, I have to say that she wasn't that different from mine. He was really nervous but hot, despite this, he started undressing my girlfriend with fear. The truth is that it started giving me jealousy and I protested, but my girlfriend told me to let him be because he's a kid. Then my little brother finished debuting with my girlfriend. 🤔 After that, I'll tell the rest because it gives me something and it's my first post. Thanks for reading me.