I need help to save my marriage life.?

I was married in 2005. I went aboard for study leaving my husband in my country. I finally get together with him in 2009. Since we got married I got supicious nature with my husband. When he goes out with his friend and spent long hours, I felt so bad. Now my husband is talking private tutoring with a beautiful lady and I can't stop suspecting him. I always get fear that he will like that lady more than me and what if they two get together and he will leave me alone. This is not the first time I am being suspicious, even in past I used to be suspicious when I see him talking with other girls and I see group picture with girls on it ect. I love him so much and only thing that makes me sad in this world is my suspicious nature to my husband. I have never found him cheating on me and he is says he is honest with me and he loves me so much. I know my suspicious behaviour may creat distance in our relationship but I can't stop it. The weird thing is I suspect him when he likes some actress. He likes one actress and once I found him browsing lots of information about that actress which make me so sad. Is this that man can't be satisfied with one women? or man likes talented women and beautiful lady? why can't a man look to only one lady and stay with her? or I am being more suspicious than anyone in this earth? Please help me change my mind, I want to change my mind and be happy.