You have been busy these days because of work, that you couldn't find enough time for your boyfriend. He had been so clingy with you even more that he would sometimes sulk and act like a toddler when you don't give him attention, sometimes he'd also act like a brat

"You don't love me anymore!:(" He whined, looking at you like he was a puppy, begging attention from its owner "Fine! Just do your work and leave me alone like you always do!"