How do I approach my online GF who I caught catfishing me? Or should I just ignore her all together?

[Alex]

I don't even know where to begin here. I met a girl online a month ago and we hit it off. We've been texting and talking on the phone every day since. She's sent me pics of her and they are all the same girl and the person I talk too on the phone is a girl.

That said, we were having a disagreement on when we talked the first time and I went and looked on my phone bill. Her calls always come up "No Caller ID," but there was a different number than the one she gave me listed on the night we first talked. I Googled the number (I Google everything) and an Instagram account came up in the listings bc the owner of the account left a comment with that number in it. I clicked on it and it's a guys account. But what's really odd is that every moment she's told me about, there was a correlating picture of this guy with that moment. There are also details she's given me about her life that were also in this guy's photos (i.e. type of car she drives, she's into cheer, that kind of stuff.)

I've always been skeptical since she says she doesn't have a twitter, Facebook, snapchat, instagram, etc. But I do know a girls voice when I hear one and this is definitely a girls voice on the phone. But there's just too much coincidence here to not be true.

Should I approach her about this and how would you even begin this conversation? Or would the best course of action be to just ignore her and move on? I mean, obviously whatever we had wasn't real to begin with, so should I even waste my time?