So i am 17 years old and I am a bisexual female. I currently have a girlfriend, we've been together for a month now and we're going through a little situation and i need help solving it.

My girlfriend tells me that she doesn't do social media which makes me think that she literally does not have any social accounts but I find out that she does. Now I'm going to tell you how i found it.... 2 days ago when I was texting her I decided to change her contact name. So after I changed her name I seen that below it, it said 'Connect on messenger'. In my head I'm thinking 'Connect on messenger for what?' I clicked on it and the messenger bubble popped up. I'm thinking 'Who is this?'. So i go to view the profile and see that she has a whole Facebook page but she told me "I don't do social media".... My problem is not that she has a Facebook page it's the fact that she basically lied to me. Then when I texted her on messenger she blocks me.. Now I'm feeling like she has something to hide or something she doesn't want me to see on there. I've texted her about 5 times now and no reply not even an answer to my calls. Any thoughts on what i should do?