My personal belief is that our intuition can often act like a superpower. In reflecting on my life, and experiences where it provided warning (that I didn’t listen to), I now realize it was right. I don’t doubt that yours is warning you.

More context to your relationship is probably needed but from what you’ve written, I feel like something is definitely going on. You have the texts that prove it, much less the bad feeling you have. You can confront her or you can continue to look the other way. Often we look the other way because we are scared of the unknown that the confrontation may bring (but surely it is better than being deceived and disrespected).

Ask yourself what kind of life you want to live and the answers may come to you. Trust, honesty and communication are essential pillars of any successful relationship though. Don’t deny yourself those basic needs.