No matter how much it sucks and no matter how much you say you don't, I think all people (guys and girls) play games a bit. Waiting to see if he calls you instead of calling him...playing a game. Not answering his calls to seem unavailable...playing a game. Letting it be known that you're seeing other guys...playing a game. If everyone was completely up front and honest, dating wouldn't be fun 90% of the time, and you know it's true. There has to be a little something there that challenges you in regards to the other person or else he/she is too boring. However, I think once it's established that you both are very interesting in dating, the games should stop. You've gotten each other, now it's time to buckle down and be responsible.
I think dating should be fun, not stressful. Take things with a grain of salt and definitely don't take things personally. There will be tons of guys out there that won't be interested in you for more than just a week. And they'll lose interest cause you chew your food funny or cause you wear lipstick that's too red. That's ok. You don't want to be with those guys anyway. That's the way it works. Either you filter the men out, or they filter you out.
Oh, and when you do go out... do us guys a favor and let us know when you're interested. I'm not saying you should walk up and grab our crotch. All you need to do is look at us. That's easy enough? Yea? If you look at us more than twice, and smile, that's all we need to know that you think we're a possible match for you. Look at us, eye flirt for about 30 minutes, then walk away from your gaggle of friends for a minute to maybe get a drink or "make a call" (I mean, what guy really wants to come up to a group of girls to hit on you?). That will give us an opportunity to approach without feeling overwhelmed, and to be alone with you to chat.
Finally...this guy.. like I said, I've done the same thing. I've juggled 3-4 girls at once, and it's not easy, and really not that much fun for that matter, but if the guy seems nice and is genuine, give him a shot. It's only been what...2-3 weeks? If his behaviour keeps up, then dump him. He should know if you're a girl he could spend more time with after 2-3 dates. After that, if he's still hit or miss, take him off your list. I was seeing this girl who one weekend would be all about me, then I'd not hear from her for days. That went on for about two months (only cause I thought she was HOT!), then I just stopped talking to her. She'd call "I miss you, let's hang out". I'd tell her "Hey, I'm here. Set it up, and I'll be there". It would never happen. Finally, I just wrote her off as filler. If she called, and I was bored, sure, I'd meet up, but I wouldn't attach any emotions to it, and that was fine for me. I knew her plan, and that's fine. She was a hot girl who was probably dating 2 or 3 guys. I can't blame her for that, but by no means was I gonna get caught up in her. It's all about what you feel comfortable with and how easily you get attached or hurt. Figure that out, then date accordingly.