If you think that your man will stay with you knowing that you check his phone calls and his texts, you are so wrong. Nobody wants to be controlled—especially in a romantic relationship.
If you do that, your love is not as strong as you thought it was. Why would you worry about your man’s private things? Just let that go and enjoy your life with him to the fullest.
So, give him his freedom and enjoy yours as well. That is something that you should selfishly keep for yourself and give him the same opportunity as well.