Am I justified to be upset?

Tonight my boyfriend called me clingy.... Because we just had sex so I was laying on him to the side cuddling. He's said it before and I just texted him and asked him about it and he said "I know you like me but I don't want you smothering me". So I'm currently crying of course. Is it really that weird to want to be close to someone after you just made love ??? Someone help me out here 😫