I (F19) have had many high school partners in the past, and due to my jealousy/insecurities I have completely pushed all of my previous boyfriends away (e.g. I will create scenarios in my head, believe it completely then hate my partner for whatever reason it is that my silly mind has made up). 
I am currently dating this wonderful turkish man (27) whom I met through my boss ('tis his nephew), and we have so far had absolutely no issues. I trust him completely, I can see a future and I really do feel like he is the one. But i'm scared that I will fall back into my same patterns and either push him away, or eventually get sick of him (as I did with majority of my exes). 
Does anybody have ANY advice on what I can do to maintain the contentment and love we have for each other? I know he probably won't change the way he feels towards me, but i'm terrified I will. 