My bi curious days came after a breakup. I was 18, working at a retail store. Often the store would be dead, sometimes for hours at a time. I had sucked several dicks at this point, and loved making a dick hard and feeling it throb and grow in my mouth, and I loved to swallow! I found an anonymous guy on Grindr and exchanged pics, then asked if he wanted his dick sucked. He was about mid 40s. His cock looked so good, thick, veiny, nice little upward curve and even thicker tip, maybe about 7″ long. I had an hour break, and he was only a few minutes away from my work, so I drove over on break. I was extremely nervous on the drive there (I’m always nervous before an encounter idk why), but found myself in front of his house. I mustered the courage to open his front door (he requested I meet him in his bedroom). I see him on the bed, a towel covering his penis. He was about 6 feet tall, hairy and buff body, very short hair and a stubble beard. I assumed position, and knelt down at the edge on the bed in between his legs. I could smell he had just showered, but also could smell this manly dick aroma. He was semi-hard, and for a brief moment I gazed at his cock and took it in visually, appreciating it’s look and scent. I put my face right up next to it, feeling the warmth and his manly smell even stronger. Then I guided it into my mouth. I gladly sucked it and it was rock hard fast. I loved wrapping my lips around it tight. I was so horny and my jaw hurt lol so I pulled my mouth off for a moment and asked if he wanted to fuck me. This was something we did not talk about on Grindr, so it totally took him by surprise as he says, “…really?”. I nod and he happily jumps to the opportunity. Although the unexpected and spontaneous aspect was hot, I did not prepare to be fucked that day. But I got on all 4s on his bed and stuck my ass out, giving myself to him completely. I heard him put the condom on, and felt his hips press against my cheeks. There was not much foreplay at all and he kinda just slid it around until it pushed in. Personally, it didn’t “hurt” but was a little uncomfortable at first, and partly due to his size and thickness. But I adjusted fast to him, after maybe a dozen soft thrusts. He was gentle but I could tell he struggled to remain gentle as his thrusts were harder and deeper. It was a lot all at once, but I started to focus in on his sounds and touches, as I couldn’t see him from behind. It felt so good once I was able to relax and focus in on the sensation. It was also hot knowing I was giving him sex. Freely giving another man one of the best feelings ever. Offering myself to his will to cum. Imagining how he feels fucking my tight my ass, then back to feeling it fill my hole and tug it around. I loved how it poked around inside me, his cock so hard. Some people don’t enjoy it so much, but my first time started my addiction. He fucked me for about 10 minutes then cums in my ass, and I could tell it was an intense one because he let out an aggressive and primal moans and shutters. He pulls out and we get up and get dressed. Honestly, even though the sex and experience was so hot, my favorite part was how he got up behind me and kissed my bare shoulder and just held me from behind kissing my neck for a few minutes before I put my shirt on. I felt so warm in his arms and idk, cozy? I’m more masculine but idk he was bigger than me still and yeah it just felt so nice to feel his body up against mine holding me from behind kissing my neck, such gentle and soft kisses. Really made me feel good. Anyways I left and felt so slutty and horny still on the drive back to work. I liked having a dirty little secret, knowing I did not go “get food” as I stated. and yeah that was my first time, one of my favorite and best times still to this day.