I have a gut feeling?

So lately I been having this gut feeling my girlfriend is cheating on me with other guys, when we go out she walks fast and leaves me behind, I also caught her checking other guys out a couple of times and told her about it but she denied and told me that she only has eyes for me. Today she told me to leave the room telling me she wants to be alone.

I left the room and then done my thing then pretended to go to the bathroom and came to the bedroom and caught her laying on her sides smiling at the phone. We have been good the whole time, we joke around and have fun in each other’s company.

Before we were having sex almost everyday now we have sex once in a while. Is it me thinking she is cheating when she really isn’t or is my gut feeling right.
I have a gut feeling?
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