Do I have to spend time with my boyfriend?
Why wouldn't you spend time with him?
I've found out that my boyfriend is a stubborn man
Well, it sounds like you need to take some time and reconsider your relationship if that bugs you so much.  You should feel free to take a little time for yourself now and then in a relationship!
Why should I need to reconsider my relationship? There's nothing wrong with me. There's something wrong with my boyfriend for making me feel this way.
If your boyfriend really makes you feel so bad, don't you think it might be best for you to take some time so that you can think about your relationship and consider if you want to move forward? Whether the problems stem from you or him, it seems like you are unhappy with the relationship.