My boss was fucking me in the car. It messed with my head! I don't know what it was!

What happened-

Since my last post, I've received over 100 private messages (of all kinds). Some were full of concern, the rest were typical Reddit-style desperation. Most of you asked about this incident, so here it is-

Last week was appraisal week. We had standard appraisal meetings. My turn was on Friday. A normal day, nothing out of the ordinary. My direct supervisor and someone lower down the hierarchy attended my meeting. It went well. I got a raise, which was higher than I expected. People wanted to celebrate, and everyone went out for dinner and drinks. I went too. I had a few drinks and chatted normally. Since it was getting late, my boss simply asked for a ride home. I agreed. Since we were both tipsy, he drove slowly. We stopped for cigarettes and talked about normal things. After cigarettes, we got back in the car and drove to my apartment. I remember him touching my thighs as his first move. The next car stopped, and we kissed. Then I took off my top and bra. He led me to the backseat and took off all my clothes. That's when I felt deep penetration. I didn't stop him, and I don't know why. He's about 45, and I just turned 18 (three months ago). He fondled me vigorously, and I begged him not to. I remember him saying it was a one-time thing (he's married with a child). He said he liked me and there was nothing to worry about. During sex, he kept talking and promising me things. After a while, I just stopped resisting and let it happen. Maybe it was because I was drunk. I don't blame him. My only problem is that it ruined everything at work, although I hope not. It lasted 20-25 minutes, and then he drove me home. We haven't spoken or seen each other since then. It's over.