AIO?? Caught GF texting other men...

I know its bad. ik... i just want to make sure im not bugging. ive been with her for 2 years and we have gone through a lot of situations that required deep emotional understanding and maturity. I havent ever felt the way this girl makes me feel and i dont want to call it quits but idk what to do with these... They are all from her phone and with a mix of insta dms and a paragraph from her best friend she talks to everyday.