What should I do?

Emily
My fiancé and I were talking and he seemed off today. He didn't really wanna cuddle and usually before I drop him off at work he gives me 2 kisses before he gets out of the car and 2 before I leave, today he gave me 2 when he got out and then went on. We also had a couple of arguments this weekend and today he seemed like he was really lost in thought. He says he is never gonna leave but I don't know if I should worry or not because, I'm terrified to lose him but I don't know if he was thinking about leaving or not. It really scares me.