Dating/ Should I date my ex again??

So I dated a guy that I had just started to be friends with right after I had gotten out of a year long relationship. He was so sweet but a little shy and it sorta felt as though we were just friends and not dating, but then again this was only a few weeks into the relationship. After thinking for awhile, I realized that I wasn't over my ex that I had dated for a year and that I couldn't put my all into the relationship with the current boy, so I broke up with him after a month. Afterwards we still talked all the time and remain close friends who talk and text almost daily. I'm beginning to think that I may still have feelings for him, perhaps because I'm over my ex and have the ability to fully get into another relationship. I don't know if I'm just lonely or if I truly do have feelings for him. I really enjoy talking to him. What should I do? Should I talk to him or am I just lonely?