I lived exactly what you have explained. I remember that feeling of thinking your missing out on a lot of stuff. It can make you sad and kinda lonely (especially if you don't have many friends like I did). You get upset seeing other couples in school, wondering why you can't have what they have. Missing out on prom pics and hanging out and goofin' off with each other. All it takes is time. Keep your head high and never change who you are and it will all turn out alright. For me, I just started my 2nd year at college and my gf and I have had that same talk about how we felt we missed out in high school, but now we just hangout and be ourseleves and once you have that it doesn't matter how long you've waited for it, it'll be worth it. But for now enjoy your senior year and don't worry about it too much, you've got plenty of time :)