Opinions

Well a girl started work with my bf and I just felt like maybe something was going on anyways I find a phone in his truck that's hers looks like it hasn't been used since 2015 he swears he doesn't know how it got there and someone locked his truck up at work the other day he's thinking someone put the phone in there then anyways what's everyone's thoughts... the phone doesn't work, I've never felt like he would do this and he swears he doesn't know how it got there I'm so confused