Student graduates

I'm a college lecturer and have, over the years, had a few experiences with my students. The best one was with a graduate. We'd become friendly, which is normal (male and female). More so with this one though. We'd started meeting for our disso chats off campus, in coffee shops etc. There was a definite spark and playfulness. After she'd submitted her dissertation, we met for a celebration drink. We got flirty, and she invited me back to her flat for 'coffee'. I sat on the sofa and she went into the kitchen. Shortly afyer, she comes out in just underwear and stockings. She drops to her knees and rakes my cock out. She sucks like the best of sluts, deepthroating and making all the right sounds; at one point I stand and face fuck her. Eventually I cum, she takes it on the face and it drips onto her pert tits. An image that will stay with me forever. When I've recovered (takes me longer now. Age is a curse sometimes) we go into the bedroom. She has an amazing view over the city. I fuck her doggy style while we both look out over the high rises. I stayed the night. Had breakfast. Hugged. Never saw her again.