>:((

so im too scared to tell my family about my boyfirned. theyre not going to mind or anything i just have a hard time opening up about stuff like that. like i dont know what is the right momnet and if i dont do it straight away then ive waited too long and it would be weird. and he said hes going to dump me if i dont tell them but its not because im ashamed of him its because when i try to i have a block in my throat and i open my mouth and it sounds cliche but the words literally wont come out. what should i do?