Ok guys...need some help/clarity here

Well....how about instead of letting him dictate the pace of the relationship, you actually take some control of the situation and figure out first what's right for you and then communicate that to him.

If you've known him less than a week, then in essence you are not even "dating", you've merely seen each other a few times. You are still virtual strangers. Are you comfortable truly saying that he is the "one" right now? Do you really see a whole bright future together with this total stranger that you hardly even know? I would hope that the answers to these questions are no and no.

So how about you take a deep breath and slow down a bit. How about you tell him that you are flattered he feels this way and that you would love to get to know him, but would be more comfortable letting things happen more naturally and without forcing the pace. How about you actually tell him in a non-confrontational way that you know he is still checking out the dating site and since he asked you to be completely exculsive, you are confused by his words and actions and would like an explanation so that you are both on the same page about what you are doing.

Two red flags, to me:

Less than a week is way too early to want exclusivity or talk about a long-term future together. I'd hear that as either he's a player, or he's living in a fantasy world ... he can't possibly know me at this point.

He says he wants to be exclusive (and I guess you agreed to that?) and he continues to look for other women. Monkey is what monkey does. He's either a player, or he's a player. He might be a player, though.

Well..its clearly too early to decipher if he's 'the one' or not. But i see potential there...and I THOUGHT he did too...as HE was the one who brought up being exclusive.
I was quite fine keeping things casual for the first while...and then that way i CAN'T get upset about him logging in. But because he's gone ahead and defined 'us'...I now have different expectations. I dont mine defining things this early on....but I genuinely thought he wanted to just focus on me.....but if he's logging into his profile then clearly I'm missing something.
I dont think theres a way I can tell him that I know hes been logging in. I dont need him thinking i'm a stalker or anything...even tho it appears that way. I'm just trying to protect myself. I've been made a fool of SO many times and I dont know how much more i can take!