My ex boyfriend

Okay so my ex boyfriend and i have been dating for 2 years and a half. We broke up 8 months ago. And we recently start to see each other again. He says im his first love and that he still loves me but he has girls call and text him and he secretly hides his phone so i wont see who it is, but he goes thru my phone and see everything. Now im the type of person to wear my heart on my sleeve and get into my feelings a lot. He sleeps over and yes we are still intimate, and everything seems to be back the way they were until he gets those calls and texts. He tells me he doesnt want a relationship with anyone, including me. But the way he talks to one specific girl, i think otherwise. I just need some advice because i still love him but im tired of the games and i dont want to get hurt.