My girlfriend is lying to me, what should I do?

[qtip625]

Ok, so we're both Christians, but she's more attached to the worldy aspects of life than I am. I have asked her to watch her language and tell her friends on her horribly inappropriate group chat that she is a Christian. I asked her I she told them and she said she did via the chat, but I went on her chat and there was no such statement. I asked her not twenty minutes ago if she had been cussing, she said no. But in the group chat, just an hour after we left church tonight she had been using the f word and God's name in vain. Also, I asked her if her friend invited this guy over when she was coming over, she said no but her messages prove otherwise. Unfortunately, I know this information because too am lying to her by going on her Facebook when I told her I wouldn't so I can't say that she's the only once messing up. What should I say to he? And btw we have been dating a little over a year and a half.

[parham]

leave her alone

[Pretty]

stop talking to her

[A-Girl]

Don't force your own principles and values on your girlfriend. If you don't like her the way she is, or you feel so needful to change her, then perhaps she is not the right one for you.

You might be able to make her say X or Y, but whether she feels that way because you tell her to..? It doesn't work that way.

“Do not judge, or you too will be judged. 2 For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you."

[Paige]

You need to give your girlfriend some space. You need to realize that she is her own person. You don't have the right to tell her what to do. You do not control her. It's her life, and she can do what she wants.
She is most likely lying to you because she's learned it's easier to just say no and avoid all the questions and scolding. She probably doesn't like how much control you want over her life.
I'm sorry to be so harsh, but if you don't like what she is doing, and can't accept that it's her life and she has the freedom to do what she pleases, then maybe you should break up and find a new girlfriend who you are more on the same page with. Best of luck.

EDIT: In that case, it sounds like you need to talk to her and say that you would like to be completely honest with one another so you can have a healthy and loving relationship. Tell her you'll try not to get mad or upset when she gives to the temptation. We are all human after all and make mistakes. Offer to be there for her and help her how you can, but remember not to force anything on her, because that will drive her away.

[Itchy Taint]

this is really stupid. she said the f word and this is a problem for you? sounds like you need to go find someone else

[qtip625]

Paige, thank you for the honesty. I'm not gonna leave her but I can certainly be less controlling. She tells me that she believes in God and wants to live for Him. She says it's her choice, but she's having a hard time letting go of these temptations. Honestly I wouldn't be as upset if she would tell me the truth, but I'd do something to help her. She has been getting better at not swearing, it's just that she lies to me when she does.

EDIT: thank you. Now, is there a way I can tell her I've been invading her privacy without hurting her? I truly feel horrible for going on her Facebook, I'm lying to her just like she's lying to me. I'm not saying I'm better than her. In fact there are a lot of things that proves that she surpasses me.