I [F19] am all but dating my best friend [M18] but I am very concerned about th bedroom aspect of things. Could I just be nervous?

Hey, so this is going to be a little bit weird to get strangers opinions on to be honest but Im honestly very concerned about my relationship with my best friend. Context we have been friends for about a year and he is one of the most important people in my life I genuinely want him in my life for the rest of my life even if we don't date. Recently we have been going on walks and talking for hours every day, and by talking for hours I mean 4 to 5 hours per day about literally nothing and everything. I defiantly like him and I'm 99.9% sure that he does as-well.

Now here is where the problems are staring to arise. I was perviously in a long term relationship with my ex for about two years. During this relatiosip I was hevily minupulated and very much felt out of contriol for a lot of emotional aspect of that realtonship. Im tlaking I needed to tell him evrytime I left my house where I was going who I was going with and he would have the final say in if I could go or not. He cut me off form all my friends cued me to fail two of my midterms becuase he dicided to threaten to breakup with me the night before. Oh yeah that was another thing out of the two years in that realthip there where only two nigths that I did not sleep on the phone with him becuase he would get upset with me if my phone hung up. It was alot and all that emotional turmmoil caused me to not want any sexual acts from him and you better bet I never did anything for him either. Aside from kissing. However this was a big topic that we would always talk about in this relationship and one of the only things he said when I broke up with him was he was glad we never had sex. to be honest It really did mess with my head. I had no friends I had no where to turn so healing was easy on the emotional side but on the physical side Ive been very closed off.

I have never been big on physical affecting it has always felt weird to me unless Im super comfortable with someone even holding hands with a friend makes me hyper aware. (Might have a little bit of autism but I haven't been tested) but after my ex it has gotten a whole lot worse.

Now onto my best friend. He is honestly the kindest most reasonable human being Ive ever met. The more I get to know him the more I just love his personality and he is honestly 10 times more attractive than my ex. He checks literally every box that I have. He's the perfect amount of shy and assertive his laugh is infectious and he is so understanding and kind even when he doesn't know what to say. As far as I am aware he has never been in a relationship with anyone before and has no experience really. Thats not nessicarily important but idk maybe that has something to do with it. The main issue is that whenever I see him I feel so nervous and I'm not sure if its because of nerves or if its because I'm genuinely scared.

Let me preference this by saying we hang out all of time time in groups and by ourselves before and there wasn't any tension before. Last night he came up to my room (Uninvited which was a little bit off but ehhhh ill let it slide) and the tension was so thick I could cut it with a knife. At which point I felt panicky and honestly I kind of felt like I wanted to run away. I don't know why. I trust him but I feel like it might just be because we haven't talked about our feelings the uncertainty of whats going on doesn't feel good. It took me a long time to be comfortable kissing my ex. Im just worried that he is going to want to move way faster than I am and I'm going to get suck in a situation I don't enjoy. I like him Im just not sure about the physical aspect and my feelings are so confused. I think I'll have talk to him soon and tell him about this so it doesn't become a problem so Ill update after I do that! Any opinions on what else I should do I greatly appreciated! Thank you.