So I've been in a relationship for a little over 6 months. First oneitis.
She seeks my validation and attention and has no signs of losing attraction/interest, seems pretty attached and affectionate. I keep her chasing.
We see eachother only on weekends. It's either me going back to old town (grandma and lots of friends there) or she comes to me for a few days.

I'll try to keep is as short - This weekend she was visiting and we went to a disco downtown. We both got dizzy and I went to the WC. Her phone was in me during that part of the night and don't know what got into me but I checked her chats. Some might have been hidden but I can't know that. Had a great time during her visit. She travelled back home on Sunday.
Not many guys in the chats there. Actually, 2 only. Chat was boring with one of them. The other one had 3 or 4 messages, probably some deleted ones. Complete strangers. Now, what bothers me is that I think she craves validation and qualifies herself when talking to people, I've noticed that around friends.

The day before yesterday we got into a little fight over the phone. She got really annoyed and hung up. I went no contact. I didn't return her call yesterday and went to a disco with a friend and a girl. During the night, she called twice and messaged me twice asking whats wrong. No answer.

When I got home, I saw she had, yet again, qualified on one of those guys' facebook status from like 10 days ago.
Something along the lines "Men like women but they like cars more".
TBH I'm getting worried, he's fugly but apperantly she has some interest in him. Not sure whether it was the one with few messages or the boring one. But I guess it was the first one. Last time I acted jealous was around 3 months ago. She, on the other hand, knows that girl like me and expresses her jealousy openly and fears losing me.

I really feel like confronting her. I know that every attractive girl has guys that try their chances with her but I think she's too responsive to this. I can say I had accidentally seen him message her as when we were home she opened her messanger to type one of her gfs in front of me, which really happened. Checked him out, 0 mutual friends, he lives in a close neighbour city.

Give me some word of advice here. I think I should confront and tell her to show me the chats- first time I'll be doing this- they've probably chatted yesterday. Could she be doing something behind my back?
If a red flag occurs, I'll next her.
I believe there is no manly way to handle this. Things with her have been going very well lately, sex is amazing, too. If I will cut other girls from my life and not pay them attention, she is supposed to do the same, right?

I know that I'm new to this, but I don't think I have to be an expert to know what to do.

DON'T WORRY.

If you let yourself get affected by small things like that, then of course she'll see you as beta.
As one who practices PUA, you have to act alpha. Getting worried over messages and fb comments is not alpha AT ALL.

If you read your post, you can see that YOU are in control. Not that guy that she messages. You can see that she like YOU more than the guy that she messages.

So, again... Why worry?

Also, do not cut the other girls from your life.
Again, I'm new to this, but as far as I have read, one of the things keeping the attraction flowing is the fear of losing you. If she knows the you are her blind follower or something, she gets bored. I'm not saying you should cheat or anything. Just show her that she isn't the only focus of your life.

If you show that you are worried about some stupid messages and start cutting out all the other girls in your life, you'll show her that SHE WILL NOT HAVE TO WORRY THAT MUCH ABOUT LOSING YOU. Which, of course gives you a better chance of losing her.

So, you're doing just fine. Get rid of the jealousy, and you're good. Besides, she's yours, and it's obvious.

So, I hope that helped.

What is the red flag? You've seen her messages and all you've said is she "qualifies" herself. What do you mean? She tries to prove herself to people? That just means she's insecure or I'm missing something. Don't go and ask her to see her messages in any case. Give more details... Your post was long but didn't say much.

I just had a feeling that she might be doing sth behind my back. It's obvious that she's mine when I'm with her.
Anyways, you're right. Don't know what got into me this time. Thing is that we got some distance between us during the week and I cannot really know what she's doing. The only thing I'm afraid of is somebody getting into her head sneakily, they won't do it in front of me because they feel intimidated. Nobody has ever approached her whenever I am with her.
As in "cut girls from my life" I meant girls who like me and show it. How come should I not pay attention to them while she does, to a guy who apperantly does like her.
Last time I got jealous was almost the same. The last guy was texting, calling and even tried to facetime with her. He pretended nothing's happening whenever he saw me and her together. We had a talk in order for her to stop.

@neo87 - Red flags for me are showing clear signs of interest. I'm not sure but she might have had deleted some messages. It's just that openness and compliance that worries me whenever somebody shows interest in her.

Can you give a couple examples of what interest you read? How are guys showing interest in her and how is she complying?

I would only worry if her behaviour becomes suspicious or the sex dries up, or if many arguments are started over trivial things.

@neo87 -It's hard to explain, it's like every guy that messages her, gets to know her and she accepts him.

@Rough Operator -Sex is getting better and better, she literally begs for it. I fear that she looks for some extra while I'm not around. I mean, is that possible? A woman that invests so much feelings into something to cheat? This is my longest relationship by far so my experience is limited, I haven't been serious with women before that.

Stop analysing everything through the eye of PUA. Most women want approval from their piers, doesn't mean she is "qualifying" the fat dude, nor does it mean she is showing him IOI's.

Leave it, she done nothing wrong. Stop snooping, NOTHING good has ever come from snooping. You are scraping the bottom of the barrel looking for evidence of cheating when there is none.