Guy Help. I don't know what to do?

There are two guys one's my best friend and the other ex-boyfriend. At first I liked guy A ( my best friend) but he didnt want to ask me out cos he was graduating and he didnt think anything would happen between us and guy B(ex-boyfriend) asked me out and I said yes eventhough I didn't really like him but I didnt want to lose out onboth sides so I said yes but unfortunately for us it didn't work out and we broke up but the thing is guy A still liked me and he was jealous when he found out about me and guy B but he didn't tell me anything because guy B was his friend and he thought I liked guy B so.. . Bu now that I've broken up with guy B and I discovered I still like Guy A aand I think he likes me too but I'm scared to tell him because I was selfish the first time and I'm not sure he'll guve me another chance cos I hurt him the first time.