Do yall find this bad?

If you are swapping spit with her then that is only her and your business and no body else as long as you both keep it discrete.

bro regardless if u like her or not u really shouldn't do stuff like that behind ur best friends back it can f up ur friend ship in the long run if u like his sister u should problay tell him. I screwed up my friendship with my best friend of 7 years over doing the same thing and regret it all the time so u should tell him before he finds out the hard way. not bein a jerk or nothing but friends are more important then girls at ur age man trust me.

Well it depends, do you put bros before hoes?

If so, than of course I'd move on and find more girls.

But if you, like myself, put hoes before bros than you should be ready to live that kinda life.

You're only 13 though so I say you should stick with your best friend, best friend's are hella important later on.