Scared to fall in love again?

Yea I was a sucker for love. Fell in love with a conceited girl who was my first thought she was so beautiful and made her feel so special. Mistake I made probably was showing too many emotions so early, giving too many compliments, and putting her on the pedestal, but I didn't know how to be it was my first time ever falling in love. She played me. Since then, I haven't gotten close to anyone its just been several dates but nothing serious. Just can't get over that fear of being heartbroken again, or another guy replacing me etc. This same girl is now chasing me, I never give her attention anymore I've been ignoring her for some time now.