First Time: How I Love Cock

After a couple of minutes of going up and down, I told my friend that I didn’t like the condom or the taste of the mouthwash, and I asked him if I could just take it off. He whipped it off faster than a guy whips off a condom when bareback is in the offing. Prior to this moment, I had never thought about sucking a dick. I had watched porn, bought porn magazines, and imagined fucking almost every girl I met, but doing anything with a guy had not even crossed my mind. I didn’t even really know what “gay” was and to me at this time, I was just helping my friend get off. His naked cock was now inches from my open lips. I gently licked the head and he twitched, his whole body spasming. I’m sure he had been thinking about having his dick sucked, since he had brought it up, and he had prepped everything, so he was primed. I didn’t know at the time, whether he had fantasized about me sucking his dick, and he never told me, but from future events, I’m pretty sure he did.
After that first lick, I tried to do the things to that big beautiful cock that I wanted done to mine. I slowly kissed the head, then ran my tongue around it. I licked it from bottom to top all the way around, then I slowly put my mouth over the head while swirling my tongue over it. My method of masturbation has always been to make a circle with my thumb and pointer finger just below my cock’s head and then to jerk up and down about an inch, sometimes going all the way to the bottom of my cock, but mainly focusing on the glans. That’s what I did with my mouth. My friend was groaning after about a minute and telling me not to stop, but my jaw and mouth were getting tired. I was so horny that I wanted to jerk off while I was sucking his dick, but that felt weird for some reason and I was a little uncomfortable. Is it normal to get horny from thinking about sucking cock? I was nervous that he would think that I was jerking off thinking about his cock in my mouth instead of thinking about girls like he supposedly was while I sucked his dick.