I have this crush...

so at the beginning of last year I met this guy and was like he cute but not really my type. he got my number off of fb and called me up... it freaked me out so I'm like no I'm not interested. we basically just been friends... but starting this year we work at the same place and always run into each other. he also shows up sometimes when I work out too or I work behind the desk at the fitness center. yesterday he was like what are you doing on the weekend? I was like I'm not sure... and he was like I will prob bump into you (we normally see each other at the same parties) I'm starting to have a big crush on him and wanna say something and I think he is interested to? what should I do... suggestions please and thank you!