Relationship Anxiety?

Me and my gf have been dating for about 2 months. I've had anxiety bad about the relationship. I'm always worried that shes gonna cheat or something even though she has reassured me that she would never do that. I did just come out of a 10 year marriage where my ex wife just left me and our 3 boys for no reason. Do females think that a guy that worries like that is unattractive? I'm actually not worried today at all and I'm trying to get over this. Ladies what do you look for in a guy? Any advice would be helpful.