<human>: Provide a brief overview of the text.

So long story short - me and my gal have been together for 2 years. Yesterday though, we had a little discussion about the future. As it turns out she's my first and so am I hers. Our concerns were that we might not make it through if we don't start a family soon yet we clearly do not want that yet. We imagined how hard would it be to have sex with a single person your whole life and everything. We are really serious in that relationship though some questions are starting to appear. Is it even possible to maintain a serious relationship from such an early age?

On a personal note, I've been noticing lately that I can't resist from looking at (even staring at) hot girls in the streets... I do even fantasize/masturbate thinking about some of them sometimes. And it's not like my girlfriend ain't hot... Damn... she's even hotter than most of them... It's just that I somehow crave for something different. And with that whole life of mine ahead of me I seriously don't know how much I will last like that.

I might not really sound like it but I truly want to preserve my relationship. I really love this girl and would do anything to her. There is nothing in the world I care more for. Yet.. What do you think? Is it possible to preserve my relationship and resist the temptations of the outside world? And how? What have you done/or think that has to be done in a situation like mine?
<bot>: Me and my girlfriend are really young yet serious. I have concerns that we may not last much longer. Even moreso with my "cravings" for other women. Is there a chance to save my relationship and how?