@amy23,
Amy, ask yourself in those first 8 months if you were blinded by lust and didn't notice he actually did these things all the way through to find your answer as to whether that's his character, or if, he's got "bored" and is back flirting which is crossing "your" boundry..
Whenever a guy states, or girl, "I didn't think it was wrong and explains it away" in my opinion that means, I'll do what I want, accept it.
Also, understand once in-security sets in, you start to "snoop" and from "snooping" you come up with all sorts of wild thoughts, never in a good way and sometimes those actions are innocent, ie) he knows that you are in-secure by nature anyway and therefore, doesn't come straight out and tell you things.
One don't snoop it never pays off it makes it worse and it invades privacy and secondly communication is the key. If he can not understand it worries you, then you have to second think.