I'm upset with my boyfriend for always choosing to spend time with his parents over me.
Why does he always choose to spend time with his parents instead of you?
I'm not sure, but it's really frustrating for me. I want him to spend all of his time with me.
It is understandable to want to spend time with your boyfriend, but it is unreasonable to expect him to avoid spending time with his parents just for you. You have to understand that he needs to see his parents as well as you.
I'm going to yell at him until he decides to stop spending so much time with them.
You should have a constructive conversation with him, yelling won't do any good. Discuss the situation with him and tell him you feel neglected. Help him to find a balance between spending time with them and you so that all of you are happy.