Love Sick Puppy?!?!

Lately me and my boyfriend haven't been talking. I thought is was because of my job, recently they have been given me really crazy hours. So I realize my boyfriend seems distance from me. So I asked him if he lost interest in me. So he gets all mad and says no but you act like a love sick puppy and its not attractive... so I asked him how am I acting. Then he couldn't explain himself he said you just do. Am I smothering him? What should I do? I barely see him, I give him like 5 txt messages a day. And its nothing lovey dovey. The last emotional thing I told him was that I missed him 4 DAYS AGO!
Love Sick Puppy?!?!
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