So I'm 24, living in a new city going to school. I've had boyfriends pretty much stright since I was 15 and I really just want to kind of date people and have my space and not belong to anyone. So I met this new guy at a party one night, and he's a bit younger (3 years), and he lives in another city about an hour and a half away, and we totally hit it off, I felt an insane immediate chemistry that I had never felt before, it felt like there was literal physical energy between us, like there was something in the air.
Well we all ended up staying at a friends house that night and he ended up crawling into the bed I was in, and we basically cuddled all night (nothing more). After we woke up, there were a lot of people around and it was a little awkward, so we didn't exchange numbers, but I stalked him out on Facebook and added him, and we ended up messaging back and forth.
So he came into town to see me a few weeks later, and we went out for drinks, it was a little awkward but we talked about that, and we just hit it off like crazy, talked about everything and then we went back to my place and had the most insane passionate love making ever. We spent pretty much the whole next day lying in bed cuddling and talking. I told him that I had been seeing someone else and that I'm just generally looking to date and enjoy myself with nothing serious right now and he was super cool about it.
He left that day and we stayed in touch, and he came to visit again the next weekend, again we had a great connection and ended up having some really intimate conversations. I've really never felt chemistry like this before.
He texted me probably every two days or so after that. Two weekends later he asked if I wanted to come to a party in his city, and I took a bus down there for one night. When I got there he had a girl with him when he came to pick me up, and I was a little confused, but figured she was probably just a friend, and we weren't actually "dating" anyway so it was no big deal.
We went to this party and everyone got pretty messed up, I ended up kissing his female friend (who told me this guy talked about me a lot and also said that the two of them were just friends, and also were going to be roommates soon) and she also kissed another girl, and this guy also kissed the female friend, but I didn't really mind at the time.
Well the other two girls ended up going upstairs together, and he said that we should join them, I said that I wasn't really down, but that he could go if he really wanted to (not thinking he actually would). But he did, and I had to wait for him downstairs while I heard him have a threesome upstairs, but I couldn't leave because I was not from that city, I didn't really know anyone else, and my overnight bag was at his house.
So eventually they came down and we took a cab back to his place (along with the female friend who slept on the couch), and he asked me if I was mad, and I said yea a little. When we got back to his place I wanted to leave, but the bus didn't come for another couple of hours. We talked about it a little bit, he apologized a lot, said "I thought you were down", and said he still wanted to see me again. I told him I probably wouldn't see him again because I was upset that I had taken a bus all the way to see him and he had a threesome with two other girls when I was there even though I know he was very drunk and high and all that it still kind of hurt, he could've waited till the next day to do that when I wasn't there and I wouldn't have cared because we are not in a committed relationship. I ended up sleeping in his bed because I thought it would be the last time I saw him and wanted to say goodbye in a way.
We didn't have sex, but we kissed and cuddled and were pretty intimate (not sexually). He apologized a lot and kept saying he wanted to see me again, and seemed like he was really upset about it all, and acted like he really liked me, but I said I didn't think I wanted to see him again.
Then he drove me to the bus station and when I left he kissed me and said, "I still want to see you again but it's up to you". I left to take the bus and realized that I did want to see him again since we had such great chemistry and I wasn't looking for commitment anyway.

So I texted him before I got on the bus "I hate you, you better think of some really amazing way to make it up to me" (the I hate you was a joke of course), and he didn't text back. When I got home I texted him "so are you gonna make it up to me or what?", but he still didn't text back.
And now this is driving me crazy, I know he pulled a bad move by doing this when I came to visit him, but I honestly feel like I'm more upset about the fact that he didn't text me back!
And I really do want to see him again and keep having this sort of passionate open relationship, because the chemistry is unlike anything I've ever felt, and I have so much fun with him.
So now I just don't know what to do, it's been two days since I last texted him, and he hasn't texted me back, but he did say he wanted to see me again...
I don't want to give up that easily, so I was thinking about texting him or calling him later in the week, but I'm not sure how long to wait, or what to say when I call or text, or if it's best to call or text. I know if he doesn't answer again I'm going to give up, but I want to give it one more shot.
So my questions are...
Should I call or text?
How long should I wait to call or text?
What should I say in this text or call to get him to come see me again?

My advice? Don't text, don't call... you did already, twice! He knows you text him and he's choosing not to reply, he may reply when he's ready to have sex with you again on the weekend, you would be a fool to fall for this guy and his "words", its none of my business if you'd rather have no strings sex with someone but I wouldn't go chasing them to have sex with me and I wouldn't expect a lot of respect from the guy. Be careful :O

Judge people by their actions and not their words-he's not getting back to you so why text him again?
As for passionate open relationships I would be really careful,my take is they mosttly end in tears.

I think you need to get a clue.
He is into sex. Open sex, threesome sex and who knows what other kind of sex.
He is not texting you back because you are not into what he is into.

You need to stop behaving like a teenager with a crush. Leave him alone.