<human>: To start of, I feel cursed. I've fallen for a incredible girl who's head over heels for me, but she's underage in my state making my feelings about it a real conflict. She's also the first girl that I can say is my girlfriend, so it kind of a big deal for me. I feel like I have to keep it a secret in order for us to be together and I hate keeping something this big a secret. I live with some family, making my life hard to keep a total secret.

We met through a post on Whisper, and over time we got closer and closer, to moving from the app to phone calls and Skype chats, to us falling for each other and wanting to be together.

After talking and being "together" for about a month (due our conflicting schedules), we're having our first date this coming weekend, and I'm excised to finally meet her in the flesh. But sadly, my guilt to my family is on my chest.

My family are very aware that I've been lonely and longing for a girlfriend for years, and whenever I would visit my parents (I currently live with my grandparents), its one of the first things they ask about. With that in mind, I feel awful having to hide the fact that I've found a girl that likes me, something they would love to hear if it wasn't legally questionable. I'm sure they'll disapprove of it, or worse, force us to break up. I'm thinking of telling my grandpa about it, seeing he's far less judging and uptight like my parents. He's been supportive in rough times like these, so hopefully he wont freak out too much.

Could you distill the essence of the text into 1-3 sentences?
<bot>: Feeling guilty about keeping my non sexual relationship with a 17 y/o girl a secret. Should I let my family know about us?