I (21m) fucked my philosophy sexy teacher (38f) and we’re dating for 1 and a half year

It happened last year's Summertime (august). I started this private course and met this beautiful teacher in the first day, she was my philosophy teacher, very kind and happy type of person. I wasn't expecting nothing at first but about the two next months we'd be talking a lot personally (coffee or tea after class) and later exchanging messages. We talked a lot about movies, series, favorite actors, places to go travel, music, bands, her professional experiences as a teacher and as a masseuse in a thermal hotel nearby. She had this guy she was dating at hers but she said she didn't like him in a romantic way anymore, he wouldn't share his money. She always laughed at my jokes and drove me home couple of times and we talked for like half an hour every time before I'd leave the car. She's very sexy, turn on, classy type of woman. She has this perfect ass, gorgeous. I loved looking at it in her teachings. We went to the mountains this one time when she decided she'd say she loves me but it's just wrong. I wasn't expecting, but I got turned on immediately by her looks and clothes, she was fine! Dark-ish discreet leggins, knees black skirt, light green long sleeve blouse, a long smooth scarf, middle-sized heels, together with a sexy glasses and perfect makeup made me drool, she was stunning. I was wearing casual clothing, really simple but fancy. A blizzard was passing by up there in the mountain, it was kinda cold too so we remained in the car. She started touching my left leg with her hands and I could see she was really shy at that time. "You know.. I really like you but-" she said. "yeah? But what?" I shot back. "I feel this whole teacher-student thing going on between us so oddly comforting it's weird and it's almost like it's not right." I leaned my head over next to her ear and started kissing her neck slowly, drawing back my head to her mouth REALLY slowly, at this time I noticed she was getting nervous and trembling. I picked up her hand and she smiled. then I finally kissed her and she was in shock. Side note now: I knew I had to kiss her in order to be with her! She wasn't going to and without it it'd be as well as losing her right there. I grasped and coughed a bit, distraught and extremely shy, thinking: "If I fail this, I'm going to be the real loser." When all the nervousness wore off we realized we just had the best moment in our life until then and we went to pizza-dinner right after. She kept telling me that she was in love with me and wanted to be with me, I answered back the same. We started dating this exact day and within a week the other guy had been gone. I would then come and meet her pets and her beautiful house. The first time we were alone we went for a coffee and tea (she likes tea better), and sat on the couch to talk a bit and have fun, when we started kissing and she grabbed my face with both of her hands and then sat on me, we kissed like savages as if there was no tomorrow, wow. We then went to this very warm room where she uses to do massages and took the clothes off. I leaned down on a fur carpet and she put me a condom (one of the rare times I used a condom with her, she uses birth control pills) and then sat on my dick… oh my god. She slid my dick into her gorgeous shaved pussy and I was CRAZY. She knows how to ride it so well! She leaned forth and touched her belly with mine and started kissing me, I grabbed her delicious boobs and started thrusting fast, she was loving it, I then had to grab her ass to stabilize and pull her hair back… she likes it hard, awesome. We were in heaven and until this day, I am in heaven. She's perfect, I must say. She's the best of two worlds. She also enjoys sex in the wild ;)