<human>: Reddit.

I have this strange gut feeling about my girlfriend that something is off. I never had this in 3 years until 15 days ago when it started. I was never an insecure guy, never doubted her.
No special event triggered this feeling, might be my subconsciousness picking something up, but ever since it started and I am being more attentive and I keep catching her on all kind of lies. Small, not so small. I've began questioning everything. Is she really with who she says she is with? What was the real reason for her her facebook password change 3 days ago?(Her reason: If I can't have yours, you can't have mine) I never had a problem not having her facebook password, I never have a shit, but now I'm paranoid. What is she hiding? I've began questioning the past, during our first year she talked to her ex. She claims nothing ever happened, that they never met up. How can I know?

Honestly I don't know what the fuck is going on. I just have this weirdest feeling. I don't trust her anymore, I don't believe her anymore.

I hate this feeling. I feel like a detective searching for all kinds of clues. My mind is occupied by this most of the day. I hate who I'm becoming, controling and snoopy..

I'm thinking about letting her off because a few more days of this I'm gonna chop my head off. All I keep thinking about is this feeling that something ain't right.

Can you provide a brief overview of the text?
<bot>: I got a gut feeling that something is wrong. That my girflriend is hiding something, and is not being trustworthy. What do?