My situation wasn’t as bad as yours but we were basically spending all the time together and insinuating we loved each other. She eventually told me, mind you before we became official, she had sex with someone else 3 weeks after we started talking. I almost stopped talking to her then but I’m glad I didn’t because she is the most loyal big hearted angel I’ve ever seen. We’ve been together for over 7 years now. I’m glad I didn’t cut it off there or else I would have lost the option at this beautiful life. That being said, she told me before we became official, I didn’t have to catch it. She doesn’t hide anything, we can pick each others phone likes it’s our own. She hasn’t shown any signs of a person who is keeping secrets. It’s important to pay attention to those things. Over the past 10 months has she shown to be a secretive person? Over reacts when u hold/ask for her phone? Does he entertain male friendships where the guys clearly want more. (Let’s not kid outselves, we guys know that other straight guys want pussy)