I [F] cheated on my BF during freshman orientation

I'm an international student (from Asia) at a US college on the east coast. I went to boarding school nearby for all of high school and for the last 2 years have been dating a nice guy from New York. He's going to school 2 hours away now, and we felt like because it was close enough and not really "long distance" we would stay together and try to make it work. I was his first for most things and he was my 2nd, though the first was only a few times and it's with him that I really explored a lot.

Even though I'm not new to America, I still got asked to join my school's "international student orientation." Some parts of it were really basic like "how to get groceries" or "American holidays explained" so I skipped most sessions and stuck mainly to the social mingling events. One afternoon, I was skipping out on something and was heading back to the dorm. A traditionally handsome and strong guy held the door open and as we waited for the elevator I introduced myself. He said he was Augusto and spoke in an accent I couldn't really place. I asked where he was from and he said Brazil, which surprised me cus he looked really European and suave, so I was expecting somewhere there. We ended up being on the same floor, so the conversation continued as the doors opened.

I mentioned to him the session I was skipping and assumed he was similarly not interested. He replied that he was actually early to campus not for the International Student Orientation but because he was on the water polo team and they had practice one month before classes started. I laughed and told him I never met anyone who actually played water polo and didn't even realize the school had a team. He gave a little arrogant but mostly flirty response about how they're actually one of the best collegiate teams.

We had reached the door to his room but paused outside to talk more, I said that all I know about water polo is they wear those funny ear protector / helmet-y things. He unzipped the gym bag he was carrying and pulled it out and I laughed even more and told him to put it on. He opened his room door and told me to come in, that he wouldn't do it in the hallway, so I followed him. He put it on and I giggled a bit, saying how it accentuated his eyes. Then I pointed at the speedo in the open gym bag and said "do you have to wear these in practice too?" He said of course and I commented how they must be humbling. He responded that he's more comfortable in that then most clothes, and as I laughed again he said he'll put it on too.

He went into his bedroom and came out in the full water polo kit. I was really impressed by his figure - sturdy and defined, muscles everywhere, and really nothing to hide. Though the material was thick enough that it wasn't so much that the bulge gave any outline or anything. He took off the ear protector things, and walked closer to me and said "are you only going to stare at it?" I was taken a back a bit and asked, almost seriously, "what else would I do?" and then he gently grabbed my hand and moved it, without any protest from my side, towards his crotch.

As I felt him growing in the speedo he moved in to kiss me. It was really all a blur - we kissed, he found and squeezed my breast, I took his cock out and stroked, and we moved into the bedroom. He got on top and kissed me all over my body. I felt on fire, passionate to have new lips on me, knowing it was wrong, but it all being so exciting and sudden. He went down and licked my pussy for awhile, making it very wet from both an excess of saliva and my natural readiness. Then he came back up and kissed me deeply as he entered.

It felt gentle with his body yet rough with the force of his thrusts. It was all overwhelming . I felt close to cumming at a few points but never quite went over the edge. He then turned me over flat on my stomach and held my ass firmly as he went deep from the back. He then leaned to my ear and asked if I was on the pill. I said yes shyly. It hand't even occurred to me to have thought about a condom, I got on the pill with my boyfriend before we even had sex and so I've never really used one. Quickly my mind went to how reckless that may be, but then Augusto started going very hard. I could feel myself get closer and closer as he went harder, and then I heard this deeply masculine grunt and immediately felt my wetness multiply as my juices got mixed with his cum. That finally pushed me over and I began to orgasm too. The timing felt too perfect and I laughed thinking he must assume I faked it.

He stayed inside me for a minute or two, breathing loudly into my ear and I could feel his sweat on me. Then he rolled off and I turned around. For a second we were almost cuddling, but strangely that felt too intimate and I was looking for an escape. I looked down and saw a bit of cum remaining on the top of his dick so I moved down to lick it up. I stayed there, resting my head on his big firm thigh and gently kissing the head of his dick, licking his balls, kissing where his pubes were shaved. Being up close and personal, his scent mixed with mine, aroused me a lot but also gave me a sense of dread. Seeing his cock right in my face, felt much more real than the sex, I was excited to play with a new dick, but knew I shouldn't be.

He got hard again relatively quickly and I started giving a proper blowjob. He dirty talked a bit, just saying how good my mouth felt, how hot I looked, etc. Must've been 5 or so minutes only before he said he'd cum. I just kept going and went deeper when I felt the first shot. It hit with a lot more force than I'm used to, and was surprised since he had just cum minutes ago, even the quantity felt like more than my boyfriend normally gives. That comparison also made me feel a bit wrong, but it was just factual.

I toId him I should go clean up, and he said "same" - there was an awkward few seconds, but we said we'd see eachother around for sure in the dorm and on campus. As I walked into the hallway, I had to scurry quickly to the toilet as I felt him dripping out of me. I couldn't believe I had taken 2 of his shots, one inside and the other swallowed, I felt guilty but also alive.

It's been a week now and I haven't told my boyfriend, thinking maybe I should when I see him. I've only seen Augusto one time, out on the quad and we waved but didn't talk. I did masturbate twice thinking about it. What's funny is there wasn't a particular moment that stood out and I wouldn't say it even came close to my best sex ever, it was just the whole situation that turned me on. Let's see how I deal with this!