I agree with "TwiceBitten"....I think you were in bad relationship that you think this one would be the same, then you like to find a way to prove it....
I am same like you....just please don't ruin your relationship and try to stay away from him when you are angry or down or sad....because you know what....if you are not good with him all the time, then he will eventually leave you...then you will be obsess and heart broken.....I've done it, and I know it how it is....please stay strong and be nice to him....

take care
Marjan