Girlfriend's blowjob and hot sex in outdoor park

My girlfriend is an adventure seeker. I wanted to take her on a sexual adventure. We went to a park, it was only her and myself in that park. So, We decided to get a bit dirty. She sucked my dick on exposing her boobs. Then, I fucked her tight from behind inserting my dick tight into her drenched vagina. I cummed quickly and took my dick on spraying my cum on her pussy.