How do you know when to let go

Well it's been three months since that London weekend affair and me and Daniel have barely spoken since then. Maybe three or four conversations, and a bit angry text message when he thought that I ignored him online. We're not even together and yet here I am, I'll admit, obsessing over this whole thing.

We haven't talked to each other for a over a month, no e-mail, no phone calls, nothing. There I was come Saturday morning, kinda bored, and thought about just calling up some people. It's something I tend to do, just calling people up letting them know I'm thinking about them, etc etc which I really do. Anybody has suggestions to help me stop that? It just feels like I have too much time on my hands to be thinking about others, when I should be thinking about me me me.

So Daniel picks up and not even two minutes into the conversation, saying how I disappointed him. I was just sitting here, thinking "What'd I do now?" Considering we don't even live in the same continent, there really isn't much stuff I can do to disappoint him now, is there? We went back and forth, him telling me I should know what he's talking about, when I really had no clue.
"What'd I do"
"You know what you did"
"No, tell me!"
"You know what you did, you disappointed me"
"How?"
"You should know"
"I really don't, just tell me already."
He finally caved in, and told me that he's disappointed that I've been telling things to his housemates behind his back. Well you see, he was sharing the house with a French guy and a Latvian girl when I visited. I sorta made friends with them as well, talking, even having a food-tv style cooking where they made different kinds of crepes after crepe briefly came up in our conversations, where we ended up staying awake til about 2 am, just eating and listening to music.

Those are the two I've been corresponding with since being back stateside. And it was just brief notes, seeing how they're doing, how'd their holidays go, just real casual topics. Somehow though, it seems that it came up how me and Daniel were together, which we aren't. Daniel didn't really want his housemates to know about his business, but I think they already knew from the start anyways. I'm just as confused now, as I was after hanging up with him over the weekend.

It did get better though, I think though it felt like he doesn't believe me completely that I wouldn't do such a thing. He went on about how he really had a good time when I was over there, that it was nice to meet me and all the rest with it being his first time meeting somebody through the net. It is my first too, amongst other things *blushes* He apologized too that we didn't get to do much when I was there, go to the theater, dinner at a restaurant. We pretty much just walked around and talked mostly, doing window shopping here and there, checking out different parts of London. We went to some bars too, though I'm not sure what kind it was since it looked like all the guys there had buzz cuts. We also got to go to G.A.Y. It's nice that I can now say I've been there. He was just so cute shaking his head to the beat, and looking up as he do so. I just wanted to bite him.. rraarrr

I guess I do like the guy, but I wonder if it'll just be best to let go completely. He's moving back to Italy come April and I really won't have his telephone number by then. He has talked about visiting me here in the States, but really can't get my hopes up over that. If he comes, wonderful. If not, I'll live. Well on my good days, but on the not so good ones. I'm sure I'll be beating myself up over having bothered to meet him in the first place on those days.

How do you know when to let go, where does the good go where does the good go (humming til he gets to the car and plays the song)