We were friends since the beginning of high school and would tell each other EVERYTHING. Constantly gave each other relationship advice and support. We scheduled all our classes and lunch for the same period, went on food dates and would spend HOURS at each others houses just talking and laughing. I loved being around her and wanted to spend as much time with her as possible. There was a sense of comfort being around each other, we changed our clothes in front of each other (our underwear not naked) without giving it a second thought. Although I must admit, I would secretly peek over and be mesmerized by her perfect body in her hot lingerie. Oof. I still vividly remember her in a pair of scantly red laced lingerie that barley covered half her breasts and how the area below her belly button seemed so smooth and enticing.
Since I was a douche bag, I made make fun comments like "hey its really hot in here right, you should take your bra off! :)" or if I knew she was showering I would knock on the door asking her to unlock it so that I could shower with her, because water conservation is good for the environment. She knew I was goofing around (kinda true), we made playfully sexual jokes with each other all the time. There was just a strong and comfortable bond between us as close friends who wanted nothing but the best for each other.
Our relationship in high school was pretty tame though, there was some tension between us but we never really did anything intimate except hold hands and sometimes cuddle. There was a lot of playful complementing and jokingly flirting "...Wait. What did you say? I just got lost in your eyes" etc lol. Despite all of this, we both agreed that we were just having harmless fun and it wasn't really serious. I did not want a relationship with anyone and neither did she. Also, I considered her so much more than just another girl I could hook up with and never seriously considered being in a relationship with her. We were just both happy to be each others ride or die.
Both of us were very open about who we hooked up with/had feelings for etc. Never felt jealous, in fact I was very very happy for her every time she "scored" someone she found hot. She gave me advice about girls and I believe that talking to her really boosted my confidence early on approaching girls. People thought we liked each other, but that was just not true. Around this time, I was starting to get serious with this insane girl and she freaking FLIPPED OUT once she found out how close we really were, despite me ensuring her that it was nothing like that and that we were just good friends. She ultimately gave me an ultimatum. Easiest decision of my life. NEXT. I cared more about my friend than anyone and felt lucky that i could always be there for her...(obviously all that playful flirting/cuddling would've truly stopped w her had I dated the psyco girl).
We were lucky to get accepted to the same state college and got dorms on the same floor 3 doors down (sucks that co-ed dorms arent a thing). During college, we would often sleep together in the same dorm bed while watching Netflix or w.e but never did anything more than cuddling and me caressing her hair while her head lay on my chest. I love it when girls rest their head on my chest and I play with their hair. Some urges to kiss her or suck on her neck did come to my mind, but that was only because I was, and still am, a freaking horny dude.
We gave each other frequent non-sexual massages too. I was on the soccer team at school so I was always asking for one. The way she worked her hands and glided over my back was the best pain and stress reliever in the world. Pure euphoria. I loved, and still love, giving massages to girls there's just something about being able to relieve their stress that really entices me. I have probably watched every single massage instruction video on YouTube just so I could get better, and she was usually my unfortunate victim who I would practice on. She would lay in her bed facing down. Shirtless. Every time I looked at her oiled-up and glistering gold colored back I became lost for a few seconds and thought about how sexy her back is. Shortly afterwards those feelings would go away. The massages weren't sexual or anything, although I would often joke about letting me go lower to massage her butt or she would always make me look away when she took off her bra and I would playfully try to scare her to hopefully startle her to sit up so I could see her boobs lol. I would sometimes see her boobs pressed against my bed and seeing them pressed like that on the bed and knowing she wasn't wearing anything and it was such a turn on. Regardless, all of this was just normal for us, just messing around, being stupid college kids and having harmless fun. It never felt like a romantic or sexual thing it was so normalized and we generally didn't think much about it.