DAILY DRAMA - I'm not feeling you anymore

So tell me why I have a boyfriend that I'm just really not feeling anymore!?! The chemistry is still there and all but we just don't have as much as we used to. I think the decline started when he told me that he loved me. I was too shocked! I didn't know how to respond, so I didn't respond at all. After that, it made me start to question how I really felt about him. I came to the conclusion that I'm not sure how I felt about him, but I surely didn't love him like that. On top of that, I've been talking to an ex of mine and we've been having some pretty good conversations. I think those old feelings are starting to reemerge. He wants to come visit me and I think I want him to. He doesn't know that even have a boyfriend though. He's hinted at me that he knows I do, but I sure as heck haven't told him. I don't know what to do...... I'm feeling my ex, but not really feeling my boyfriend. HELLLLLLLLLLLLP!!!