Break up or i am just stupid?

I am 20 years old and i have a relationship for 1 and half years now with my girlfriend, we broke up 4 times or something because we had periods of time when fighting was normal like everyday. We are not married. So recently i started feel the boring part of this relationship, i mean, everything is ok, we understand each orther, she is a good person, but when I leave the house and see all these beautiful girls, i feel like they wait for me to get their number or somthing, or at least i feel to shoot my shot:)) The question is : should i live my life and break up with her, meet a girls and not doing a relationship until i am ready( i learned things about me from this experience) OR should i just slap my face twice, and comming back to hubby life but being forced to control my sight:)) ?