Smart little fellow you are now aren't you.

You are right about one thing, she is still with you because she likes you more than any one else.

Did you ever stop and think what about when she finds someone she likes more that she likes you?

Is that going to make you feel like a king or a duke when she dumps you so some adonis can shag her senceless while you jerk off by yourself in front of the mirror, crying and screaming "I'm not jealous, my girlfriend likes me".

Be honest, your jealous and in denial. Everyone gets jealous, some like to admit it, others choose to live with it until one day they can't take it anymore.