Last night, my gf (we’re both mid-20s, dating 1 year) was in the bathroom and I saw her phone light up with a text from some dude saying, “Hey, how are you?”

When she came back, she checked her phone, sat on the opposite side of the couch, and set it face down next to her. She usually sits closer to me. I got up several times throughout the evening to go to the kitchen, and every time she would pick it up and text as quickly as possible to set it back down before I returned. She didn’t know I could see her doing this. She also took it with her to the bathroom the next time she went, which she never does. I’ve never seen her do stuff like this with her phone. I know this is a big red flag, but is it a deal breaker?