Be honest with him why you act the way you do. However, you WILL push him away if you keep acting like you do. Has he given you a real reason to suspect he's cheating? Doesn't sound like it. You know when someone is cheating on you generally. Like I said, if you keep up the dramatics you will push him into some other womans arms. Just believe that not all men are like your father and your ex.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?