Hi. I need advice..

So my boyfriend and I have been dating for almost 2 years.. we are going into highschool together when this school year starts and honestly I’m really afraid. I really love him, I really think he loves me. He is buying us promise rings soon and those bond touch bracelets, but that’s besides the point. I’ve met his family, he has met mine. My family adores him and his family apparently really likes me too. It is a bit difficult because his family speaks Spanish and I don’t but it’s ok, we work around it. I’m just scared for high school to start because my boyfriend is in the band and stuff and I know he wouldn’t cheat or anything but there’s going to be other girls in color guard / band but also there’s gonna be new girls everywhere. He even said he’s worried for me because since I am in cheer, he thinks I’m going to leave him for someone who “plays football” or “someone popular” when I never would. I helped my boyfriend graduate, I know this makes him sound dumb but he isn’t. He just doesn’t apply himself. I help him with what clothes he wants to buy, he asks for my opinion on them or other stuff. It’s just simple things we do for each other.. like I’m going through a lot right now because my dad was sentenced to 240 years in prison and it’s hard. Not even my boyfriend knows the details of the story. But, I’m just afraid. I know I know I knowww I sound so stupid and immature but there’s always going to be someone prettier, or skinnier and taller. I am really short (4’11) and I’m super worried about my height. I absolutely hate my body because I feel it looks weird and oddly proportioned. I’m scared he won’t want me anymore and I’ve talked to my boyfriend and he swears up and down he wouldn’t do anything with another girl, but I don’t know. I trust him. Idk why I am even writing this, I guess I wanted to express my feelings and say how I feel. Just comment what you think, please nothing rude.

Oh and, here is a picture of us if anyone is wondering.

His face is the same color of the fence behind us! 😂 me and him have joked about that ever since we noticed, we went to sephora once and I was like “I wonder what your foundation tone would be” and he said “we better go ask the fence”

Sorry for writing so much I’m just kinda upset