<human>: Can you provide a brief overview of the text?

So my best friend [f 27] moved a little over a year ago. Fast forward and I've been dating her housemate [m 25] for about 8 months now. We all get along really well, make diners together, go grab beers. 
My best friend recently came back from a trip around Europe, and just wants to travel everywhere now. I'm way to broke to go, i quit my job and went back to school full time so money is tight. 

My boyfriend wanted to go to Italy, and they decided they would go together. They invited me as well, but I just can't afford a trip like that. 
I thought I was OK with it, but now that they are actually gone, and I'm looking at all their SNAP stories and post, I can't help but feel really bad. I'm jealous and I hate it. 

I don't think that anything sexual would ever happen, but I'm also getting a lot of comments from my mom and sister about how naive I am, and I'm stupid to think they wont get intimate.
<bot>: Boyfriend [m 25] goes on vacation to Italy with my best friend [f 27] and now I can't handle the green monster.