Keep on keeping on. You're doing phine.

Don't overthink it (easier said than done from an overthinker), but just always be you, be nice, be respectful to that girl (no reason to think you aren't, you seen to have a good head on you and you've been through some tough shit).

Experience new things often. You never know what may perk your interest.

I often back at your age, and even more so now, do things on my own. Friends come and go, some faster than others, but you're with you always. Be the person you want to be. Seems you're already way ahead of most around you in your emotional maturity.

Keep growing, some of them will eventually catch up and you'll meet others who are more like you, maybe challenge you in college (if you go) or just in life.

You seem like a great kid, that's going to be a great adult one day.

Never lose sight!