Am I falling behind

My little sister who is 14 had sex before me and im 16 I feel like she can no longer look up to me and that she better than me

NO, you are not falling behind.
like if you just go out and have sex with sumone just to get to where your little sister is at, that is so stupid. you will end up regretting it.
only do it if you YOURSELF is ready, and if you are in a good relationship.
just WAIT because in a year or 2 your sister will regret her decision and she will look up to you because of your good choices.♥
hope I helped :]

How is she 'better' then you because she's had sex before you?? She's 14!! I'm sure she still looks up to you! Having sex doesn't make someone better then you & NO you're NOT falling behind! ONLY have sex when you're TRUELY ready for it, otherwise you'll regret it.

havin sex duzn make her bettr o wors den u
your not fallin behind you just havent felt that derz a guy werthy of that yet so just weit fer him an let it all happen like iz suppose ta dun try an compete wit your sista bcaz that will just make you look bad if you have sex wit whuevr ta ketch up wit her
im sure she lookz up ta you fer not havin sex an bein able ta b smart an weit fer da ryte guy

no bebe thats not true at all just because she has had sex before you doesnt make her better or no longer able to look up to you

Having sex dosent make anyone better than anyone...
For you waiting till your older (18 mature age) would be good
but your 16 and stil havent done it and knowing your sister has is
really brave of you...you'll do it in your own time, and feel
much better that you didnt make a stupid mistake when you
were youg...having sex at 14 is just sleazy, learn from her mistakes,
be proud to waite and dont give in till you know your ready,
dont be pressured theres absolutly nothing to worry about...

Stick to your guns,learn from her mistakes,dont give in till your ready!
It is not an arms race of who has had sex more,
you sister will understand when she grows with age,
No one will be judging you and if they do, there not worth your time!

Do not feel this 'falling behind'. What you are writing about is just the random side of the life. One is earlier, and the other one later. There is no connection between the age you start to make sex and the success or happiness of the life. She lives her own life, and you have to live your own life, there in no sense to mix or compare the two fates.