One year of being in a relationship with my boyfriend.

My boyfriend and I have a great relationship and we always communicate openly about our feelings and issues. However, I'm feeling a bit uneasy about our upcoming trip. I'm currently saving my own money, as I work as a call center agent and my salary barely covers my expenses and bills. Meanwhile, my boyfriend makes six times what I earn each month through his social media work. He knows I can’t afford the trip, yet he insists that I come along and suggested that I borrow money from him. I'm left wondering, is this normal? Shouldn't he treat me to the trip, especially since he earns so much more than I do? The cost of the ticket and other expenses is quite high. I just hope someone understands where I'm coming from.