Sometimes I like to go to parties without my boyfriend.
Is there a reason why you don't want to go to parties with him?
Yes, my boyfriend doesn't like to drink and I like to party.
Excluding your partner from these parties may end up hurting your bf. You can still bring him even though he is sober.
You need to understand that he's boring. He is absolutely no fun, so I might as well go out on my own.
If you find him to be this boring than maybe you should not be together. Nobody is forcing you to date this person, so if you do not want to spend time together than you are free to end your relationship.