My cat's a total baby

I left last night to go stay at the parents'. I usually take Molson with me, but he didn't seem to want to go. He ran behind the t.v. when I went to get him. I left him food and water. It was just an overnight stay! I came home tonight and he was all over me. He wouldn't shut up. His food bowl was emtpy and he had thrown up a little bit in my kitchen floor. He really doesn't like being alone for any period of time. I had to go back out to the car to get cat litter and take my trash out. He started crying as soon as I shut my door. He's not like other cats that don't want you to bother them. Moe wants attention and affection. What I thought was just a kitten phase is no longer a phase. He sits on the toilet or on the side of the shower and sometimes cries until I get out. He just laid on my chest tonight and fell asleep. Such a baby!