I sucked my girlfriend while she was tied[MF]

This is my first story, I always enjoyed reading the stories posted here. And after talking to my girlfriend this is our small contribution. English is not my native language so I apologize for possible mistakes.

About Us

I am 175cm (5’7), 20 years old, white, slim, more practical sports. 18cm (7 inches) dick.

My girlfriend is 165cm (5’4), she is brunette, skinny with small breasts and a soft and round ass.

Me and my girlfriend are discovering us sexually. She woke me up one more more side, which I thought never existed in me. Me and her talked more about it and as she had a fetish of being dominated in bed, I had the idea of ​​tying her so that I could use her body as I wanted to. I spent a few weeks taunting her, with that subject. Always leaving a suspense about what and how it was going to happen.