Relationship problems

So I been dating my man for a year and month now. It’s been a hard year but I never had doubt that he would cheat. Now his family lives in buffalo that’s where he came from. Well he came back to Rochester which is a hour ago 2 in morning he was drunk . He phone went off and o don’t look in his phone because I trusted him but the phone wouldn’t stop so I ended up looking at his Facebook messages and one one his ex messaged him asking him for a ride and to smoke .idk how to react to this I feel like I can no longer trust him and on top of that now he has taking my finger print of his phone . I feel like he hiding something and he wants me to move to buffalo with him