Ask your brother to ask your boyfriend for explicit details of what exactly he will do to you. Find out which positions he wants to do, what foreplay he wants and wether or not he wants to beat you afterwards. Before pissing on you in the shower of course.
Then, describe all these details to us on here and we'll let you know forthwith.

Chop chop...

If you don't think you're ready, then you're not ready. You've only been with him for three weeks. If he can't wait until you are comfortable with the idea, he wasn't worth fucking in the first place.

But when are you ever ready. I waited till I was 18 and was still unsure my first time. I just thought, what the hell. The first time is always bad but once it's over you have a new life to enjoy so much fun!

Ask if its ok for your brother to watch that should put him off for long enough for you to be ready.

Dont do it!! Its to soon and hes only saying them sweet things to get you to sleep with him.

he doesnt love u, hes only been w you 3 weeks. Dont do anything ur not ready for bc you will end up resenting him and feeling hurt. If he puts pressure on u tell him to fuck off. relationships come and go and ull find a guy u want to have sex w when u feel ready.

using you. if he loved you he wouldn't be pressuring you after a mere 3 weeks. he doesn't love you!

3 weeks? wow dear.
just because someone says something nice does not mean he loves you.
in fact-i can guaruntee that 99.9% of the teenagers in relationships out there who say they're in love aren't. it just doesnt happen.
don't do it.
don't.

If your not ready save it. If you really want to please him just settle for a BJ or HJ that should keep him calm for a little while.

it's only been 3 weeks. why rush into anything?

Dude, gawd, no brother wants to know explicit detais about his sisters sexual life. Im litterally about to throwout because of that....

wait until ur ready.
if he really does love u then he will understand.
but until u r ready FOREPLAY lol this cud get u more in the mood 4 sex.

lol i would do the same to my girlfreind but i dont anymore.

it sound like this guy is a giant perveted prick and he just wants to have sex with you.

if he doesn't wait untill your ready to have sex then dump him

and if u do have sex, make sure he wears a condom because unless u want a baby then good luck :)

Everyone has sex at some point.
Even ugly people get laid.

If your age 17 or younger, do yourself a favor and stick it out till youre 18.

It's not OMFG too far away and if he holds out till then, it'll be worth it to him.

If you two are even still together by then...

*Yawn*
Using you.

if he wanted you for you and not for sex he would have waited for you to agree as well and not keep bugging you when your ready you know it and there isnt a doubt in your mine so i say let him know exactly how you feel if he keeps asking say we should take a break if he breaks up with you he wasnt worth it in the first place good luck

you don't say how old you are - if you're still a teenager, don't do anything you're not comfortable with. If you're a bit older, I've always found it's better to get it over and done with, then if he's a shit fuck you can dump him and not waste any more time on him. Better still, have fun on your own - go to www.dress2thrill.net

If you are not ready, stop being a tease.

if you don't think you're ready, you probably shouldn't. in fact, it's a better idea to wait until you are. not that you should wait until you're married, nothing like that.

it can be a difficult decision, but you have to remember that it's YOUR body and ultimately YOUR choice. you move at YOUR pace and no one else's.

WELL, WHAT DO YOU WANT? BE PREGNED?HAVE SEX FOR SEX?WITHOUT FEELINGS ?AND LOVE AND AFECTS? AND RESPECT FOR YOURSELF, AND VALUES,WHERE DO YOU LEFT?
AND THE FUTURE? DO YOU THINK YOU HAVE A FUTURE WITH HIM?
WHAT KIND OF PERSON IS HIM ? HIS FAMILY?
I THINK THAT YOU OUGHT TO CONSIDER ALL THIS, BEFORE HAVE SEX WITH SOMEBODY, .-
IS HE CLEAN? IS HE SICK? DO YOU HAVE PROVE THAT HE IS NOT INFECTED?
HEYYYYYYYYYYYYYYY; BE SMART GIRL AND THINK THINGS SEEING TO THE FUTURE.-
WHAT IF HE IS NOT THE RIGHT MAN? HAW ARE YOU GOING TO FRONT THE RIGHT MAN AFTER?
CERTAINLY , IS YOUR BODY AND YOUR DECISION, BUT IS THE RIGHT DECISION HAVE SEX FOR SEX?
IF HE IS INLOVED OF YOU AND YOU FROM HIM, MUST WAIT UNTIL CAN GET MARRIEGE.-
REMEBER, USUALY , AFTER DOING IT, YOUNG MANS FORGET OF ALL, AND GO TO OTHER GIRL FOR DO THE SAME, .-
AND YOU? WHERE YOU WILL BE STAY? FORGETTED?
HEY BE SMART AND BE SURE WHAT IS DOES HE WANTS, AND WHAT DO YOU WANT.-THINK BEFORE ACT.-
YOU DESERVE THE BEST NOT ONLY ONE THING PASSENGER.-YOU DESERVE NOT BE USED ONLY , YOU DESERVE BE LOVED AND LOVE , AND THAT MEANS IN A RIGHT WAY , GIVE TIME TO TIME AND BE HIS GIRLFRIEND UNTIL YOU BE SURE THAT YOU LOVE HIMM AND HE LOVES YOU.-
IT IS NOT HAPPEN NOTHING IF YO WAIT AND MAKE HIM WAIT, HE WILL BE MOORE INTERSTED, AND HE WILL APREACIATED YOU MOORE IF SAY NO I DONT WANT SEX YET TO HIM THAN MAKING SEX AND BEEING EASY FOR DO IT.-BE STRONG AND SET FEETS ON LAND.-BE SMART AND BUILD YOUR FUTURE AND HAPPINESS SINCE NOW.-

Why dont you knock your brother out, then have sex on his back, just to annoy him.

Three weeks, and the story sounds like you're teenagers. He doesn't love you, he just wants to get in your pants. Stay with him if you want, but I think you should find a guy who will really appreciate you, even if you don't want to fuck him right away. Especially since it'd be your first time, the guy should be more understanding and not put so much pressure.