I, a 21-year-old female, feel like I'm not significant to my boyfriend, who is also 21.
My boyfriend and I have been together for nearly four years. About 630 days ago, I asked him to take me out for dinner to celebrate his 21st birthday, but I mentioned I couldn’t stay out late because of an early shift the next morning. I also offered to invite friends, but he declined. When his birthday arrived, he called to say that his friends would be joining us and that he would hang out with them after dinner. I was okay with that, but while I was at work, he called again to let me know that one of his friends couldn’t make it until 9:30 PM, which was too late for me. I politely suggested that we have dinner at our originally planned time since he’d still get to see his friend afterward, but he refused because he wanted to wait for him. This made me feel unimportant and excluded, especially since we already struggle to find quality time together due to our full schedules as both full-time students and workers. He often cancels plans or prioritizes hanging out with others, and when I try to express my feelings about this, he doesn’t seem to understand my perspective. I’m not sure how to address these issues. I could really use some advice. TL;DR: I feel unimportant in my relationship and don't know how to address it with my boyfriend.