Lying and meeting a boy

[Mumma3teens]

My daughter has been acting up for the last few months and it's escalating. She knows I randomly check her phone due to a previous incident with her being bullied.
this morning I found out she's planning on lying to us this weekend. She has told us she is going to a local town with some friends but turns out she's going on her own to meet a boy who
doesnt go to her school. There is nothing in this town at all for anyone to do.
i don't know what to do, I don't want to keep fighting her and I don't want her lying to me.

Thanks for all the comments, we are currently trying to get details of her plans and asked for times etc of how she's getting there. Who's going etc to give her the opportunity to tell us herself.

my relationship with my daughter is very good to whoever thinks that it's not. We normally do talk about a lot of things, she knows she gets into less trouble the more honest she is with us and that if we find out later then she is in trouble for the lying not the situation. she did tell us about her last boyfriend so that's not an issue either unless there is something concerning about this boy. She hasn't been out afterschool much recently so I know they haven't been meeting up etc so I'm not sure who he is or how they met. We do think her twin sister might know what's going on as she was backing up the story of who was going etc last night and they are not in the same group of friends so was a little unusual.

I can promise before the weekend she will know I know about him and will be asked to explain what's going on before we decide if she can go or not.