Just take her phone

Hey, I can understand how you are feeling but doubting her on the basis of what information you have provided is also not fair on her. As a girl I can tell you one thing, I never showed my boyfriend (when I was in a relationship) the chats I had with my best friends, both guys and girls because as an individual I expected him to understand my privacy and space. You could try telling her how you feel and see how she reacts. The best way to approach this is a normal conversation about how you think her recent behavior of hiding things from you is affecting your relationship. Her reaction to it will help you figure out what she is upto yourself, since you sure know her better than we do. Try not to get aggressive or pushy about wanting to see the texts, because that could make things worse for you.

I hope things work out. Take care.

Go and sleep with her best friend

Or you could do the SANE thing and ask her and tell her about your conerns. Show your evidence of suspicious activities and then let her see the logic in your worry, I guaruntee she'll be humble enough to tell you the truth. but if she makes it sound ridiculous and deny deny denies, then assume the worste and do what Bombest said

Your girl is obviously throwing her time and attention elsewhere. Investigate!

Text messages are personal. You should never take her phone or anything like that. Talk with her, maybe she has another problem...

Ask her outright. That's the only way you'll know.

I've just seen this post was made three months ago, in whivch case you probably alreay know.

Goodluck to you

Just ask her. Thats it.

Directly ask her.

this person gets it

So... what's the conclusion... was she cheating you or not... We want to know

In love relationship we are suffering from different problems like hate, jealous, possessive and many other related problems. Therefore in most of the occasion we have found that especially teens are suffering from broken love relationship. Texting other guys and keeping secret from your love interest is really seems to be the remark of cheating. But it is quite better to clear the confusion instead of brake-up.

how about now?

Relationships are based on trust and openness, if you feel she is cheating and she behaves that way, don't stay and have a bad breakup. Leave and find someone whom you believe you can trust. Life is too short for a broken heart.
WHY WOMEN CHEAT

You should talk with her about it. Tell her you dont want to be with her if shes not honest with you. And if she doesn't have something to hide then it wouldn't be a problem for you to see her text.

I'm gonna have to agree with others - the whole point of a relationship is talking so talk:D

You better be pretty darn sure about this cheating. She could just be texting her other girl friends and stuff. You may be just a bit over jealous. Why don't you talk to her about it and tell her you are concerned. Making assumptions can backfire on you. Take the word. Ass/u/me??