self conscious?

Hey... I'm reletively new to the boards, so let me introduce myself. I'm 17, nearly 18, and I live St. Louis. I've had sex with only one girl so far in my life. I'm still having sex with her, but our sex really isn't just fucking, its very romantic. I'm more of a relationship guy, and I don't think I'd ever have a one night stand unless I was drunk.
My real problem is that I am very self conscious, or so I believe. The thought of some guy banging my chick some day in the future absolutely makes me crazy. I also have a problem thinking that some guy will make her orgasm like no other, and she will think that I sucked in the sack. I'm also very weirded out by the fact taht this guy that fucks her someday will have a gigantic donkey cock. mine is only 7 inches or so, and I really think that that is small. So, am I freaking out to much? Is there something I can read that will calm me down. Cause the thought of losing her to some asshole drives me INSANE!!!!!
Is sex really that important to girls? These are things that go through my head a lot, and I need a good answer.
Have you ever had sex with someone that really sucked in the sack, looked backed and laughed and thought less of them?

p.s. I make her scream everytime, but I always worry that some guy will make her scream louder.

I'm like u, more of a relationship guy, my frist gf sucked ass in bed but it didnt bother me a bit cause even bad sex is better then none :p, as long as she realy likes you the sex will be better then anything else.
And you'll find most people think there crap in bed, u just need to build ur conferdence up

It's all in your head... LIVE in the moment.. you or your lady could be hit by a car tomorrow...

and if you really wantto be honest with yourself... realize that everything your wrote is contrived by your ego to give itself an identity...

Another words.. its all made up.. like Dr. Seus...

LOVE
SMB

7 inches is pretty good dude...remember if you can't be happy on your own...how are you going to make anyone else happy.
It's pretty likely that you guys wont stay together for ever so if she finds someone else,so be it,theres nothing you can do but move on.I know mit's hard but time heals all and with out pain there can be no pleasure.

you sound like a romantic fag!!! that shit makes me puke!!!

you only see yourself as a realtionship type guy bc your self concious...
yea sex is that important to us girls.........but thats not the only thing that matters..a lot of other things play a role in how we feel about a certain a guy..
dude 7 inches isnt small..be happy with it then youll know how to use it better

Thanks guys, I am putting it behind me. talked to some people today about random crap.... and I feel much better. Maybe that was a little faze I went through or something, doesn't matter. Peace

when everything bad already happened (usually all at once) it only gets better from there

fuck no!!! dont you watch movies and tv??? thats only the beginning!!! the guy always loses!!!! so fuck relationships!!!! besides the ones with your grandparents....dont even bother with them.