You cant have a relationship with a truck driver without a SERIOUS amount of trust goin on. The job out there is lonely, and being alone for long periods of time do wear on ones mind. If you dont trust him its never going to work. It causes fights, stress, and heartache and thats just added drama that you dont need while out on the road. If you two have good communication built then talk to him. Tell him how you feel when he blows you off. Ask him if he is cheating. Youve been with him for almost a year, you should be able to know if hes lying or not. Other than that, you have two choices. Stay and deal with it, or leave and not. Until he gives you a reason to leave then its totally up to you what to do. Hope it works out for you.