What Am I Doing Wrong?

For years now I've been battling the game we call dating. I'm 23 years old and I've only dated three girls and I've only had one true relationship. I never dated or talked to any girls in high school. I dated my first girlfriend at 20. It lasted only three months because I found out she still had feelings for another guy where she attended college. As soon as she traveled back to school I dumped her because of it. Four months later I dated another girl. It was by far the most loving relationship. It lasted five months. I walked in on her with another guy and left me for him. About a year later I met a new girl. It was by far the funnest relationship I've had. She seemed very indecisive and "wishy washy" but I always gave her time and space. After "dating" for a few months she finally gave me a straight answer. A month later she broke up with me before she traveled back to school. She told me I was too nice. It's been almost a year since then. I close to going on a date with a girl I met at my gym. She wouldn't give me a straight answer until a couple of days before our date. Of course, she said no. We still talked on occasion after that but she continued to play her weird, prude games and I stopped speaking to her. I've tried talking to several girls at my gym and none of them seem interested or the give me a nasty attitude. My friend and his fiance tried setting me up with one of their friends tonight. My friends fiance kept telling me she was excited to meet me because I seemed like such a great guy. When she finally saw me, it was a 360. When I tried striking a conversation she wouldn't carry on with it. When we left I told her it was nice meeting and she said, "you too." I was thinking...REALLY? I asked my friends what her deal was and that wouldn't give me a straight answer and said, "Don't worry about it." I just don't get it. I'm not like the majority of guys my age. I have a REAL job that pays 40k a year, I drive a Mustang GT that turns heads, I have a beautiful apartment in the city, and I'm still going to school to improve me career. My friends never have problems with girls. My friends that are even taken get girls numbers without any problems or games. I'm 6'0 220lbs with a mild body builder physique. Some people tell me that it's because I don't have anything obvious wrong with my life. I really have my life together and some women find that boring I suppose. It's becoming frustrating..and I hate being like this. Any advice is appreciated!