Is this normal?

I'm 16. I have this best friend and I often hang out with him at his house. He has a brother (he is 18) and we started to talk and eventually became very close friends.There was this day in the middle of the night, we were talking about how our lives have been online and he came out to me. At that point, I told myself I was straight although I always jack off to gay porn and fantasize about hot dudes. I asked him more about his role if he were to have sex and we just talked till I fell asleep.A few months later, I was very sure I am gay. I tried to come out to him a couple times but I just couldn't send the message. After many tries, I did. He was very understanding and told me that he finally found a buddy of the same kind. Then life continued as normal.Till last month. I was very very horny. I texted him and asked him whether he was awake and surprisingly, he was. I started talking about horny stuff and he also got turned on. I don't know how, we decided to mess around. He bought some condoms and lube from a convenience stall and I went over to his house. He lubed his penis up and tried to enter me but I was too tight. After many tries, we gave up and I asked him to mouth fuck me instead. So he did and he came into me and I tried to enter him too but also too tight. I guess we were doing something wrong, and I later realized we didn't stretch our holes (by fingering). We agreed to mess around next time when we were all stretched up and ready.Kinda disappointed when he couldn't enter me and when I couldn't penetrate him too. I want to experience both of it and I am excited for the next 'session'. Hopefully he is able to enter me and likewise for me.Also, I want him to tie me up and just do whatever he wants with me. Is it just me being crazy?Is it normal for me to be experimenting with my best friend's brother? I had a oral encounter when I was 13 with a friend (he is also 13). He asked me if I wanted to suck his huge dick and me being curious, said yes. We ended up in the toilet and I was licking his slit and he guided my head down his shaft. Unfortunately, we didn't talk anymore after that incident.