Caught During Prep Period

I've been in my current relationship for five years now. It’s solid, filled with love and mutual respect. But lately, I’ve felt a strange thrill sneaking into our routine. One day during prep period at school, while the classroom was empty, my partner walked through the door, knowing exactly what to expect. We had talked about it beforehand, but there's something exhilarating about being caught mid-act in a place so public and private all at once. The moment he closed the door behind us, I unbuttoned his slacks, pulling out his thick, long member. It was like we were on edge, knowing anyone could walk in anytime. We moved against each other fiercely on the desk, my thighs slick with his pre-cum as he thrust into me. He leaned over to whisper how much it turned him on seeing me there, and I let go completely, taking all of him, feeling every pulse and inch inside me. The climax hit us hard together, our groans muffled by a quick kiss before pulling back up the desk and tucking ourselves away as if nothing happened.