Is it normal ,i have no interest in sex

You may have become asexual.

Once you start sucking cocks you will be hooked. i like getting sucked off and think of nothing else but once I start blowing guys I will be worse. That's why I haven't started yet!

I think you are a closet gay. Suck a cock and get back to us.
I think there is a hint of mint about you...

You could very well be asexual, but as you had a girlfriend of several years (I'm assuming you had sex then) you may also be demisexual.

http://en.wikipedia.org/wiki/Asexuality

The wiki actually seems to have quite a bit of good information on the topic, as well as a lot of related terms, which may help you narrow down what you think you may be.

Maybe you just don't have those feelings for anyone you've met since, or maybe you're asexual.
If you're still attracted to girls, but just not interested in banging at this point, it's probably the former.
Asexual would mean that you're not attracted to anyone.

Maybe you will fall in love at some point and the urge will come back.

No interest in sex would mean you're asexual.
Maybe you should become celibate.

You need to restart. Try sucking a cock.

i am a guy ,so no sucking cock , anyway i wanted to know if any one out there suffers from the same problem.