There's this someone who says she is insecure everytime she gets totally pissed at her friends for buying the things she'd like to have like cellphone, laptop, tv etc... She's even mad at seeing couples holding hands while walking... She doesn't want other people to get ahead of her...

I think it is more of Jealousy rather than insecurity... She's totally competitive... and that gets on my nerve..

Can anyone help? What's the difference between those two?

Thanks for helping...