A bit confused about what to do? SHould i drop this guy?

my ex and i were together for 5 years and he's 30 and im 25 we broke up 3 months ago due to problems and issues...but we never took a break in the 5 years we were together..but 3 months ago we both just walked away and didnt speak or keep in contact until recently he started asking around about me then we ran into each other and suddenly we started talking and hanging out ,,but i am the one that has been contacting him. I feel like if i dont call him ..he wont call me...but every time ive contacted him he's responded and we've hung out..and we have hooked up 3 times since we started talking...but i dont want to talk about anything..i just want to keep the past in the past and see how things go...he hasnt said anything either.but when we hang out the connection seems to still be there..and i love him so much and i just want us to get back together..but i guess im just scared to bring up anything and hear what i dont want to hear..but..we hung out all day without hooking up and he kept saying that he had such a great day..and the next day he came over my house and we hooked up but he seemed a little colder and left ..i dont know what to do..im so confused and he's confusing me..is it ok that im the one that keeps contacting him? cause it seems like he doesnt mind it...what should i do ..'? someone please help me..he wont actually pick up the phone n call but he'll somehow contact me thru email cause he knows i have a blackberry and i get it on the phone..but it will be like coupons to something or fwed emails..but he is so distant ..and when i asked him what he was doing friday and if he wanted to do something..he told me i was better off plannin something else...cause he wasnt sure what he was doing...and i told him dont worry i can plan something else thats not the problem i just thought id ask u..im just hurting so bad..i feel like cryin..i know he has a lot going on for him..he's moving ...he has school..so i dont know what to do..i wish i can turn back time and fix things.. :( i want to talk to him but i feel like he's holding this front and he wont really say what he's feeling..i dont know what to doA bit confused about what to do? SHould i drop this guy?
You were in a relationship for 5 years and you still don't know how to communicate with each other?! The key to a successful relationship is communication, stop second guessing yourself and tell him to start opening up to you. A relationship that doesn't have communication is doomed to fail. I am completely honest and open with my fiance, we have many ways to communicate with each other; we talk when we are together, we email and text message each other, and we speak on the telephone. There are so many comm lines between us that it's nearly impossible for us to not communicate! If he is unwilling to talk about the bad parts then he's a coward and not worth dating.