People of Reddit, I need relationship advice

So I have been dating my boyfriend for almost 5 year and I absolutely adore him. I think we are the perfect pair and I want to marry him more than anything. Recently though, I have been having these dreams that included thing guy. I’ve never met him in real life and he doesn’t look or act familiar. He has been in 4 of my dreams now. The first one we just had a nice conversation and I turned him down because of my boyfriend, second one we talked for hours at a party and I just couldn’t get enough, third and forth we talked some more and were definitely flirting. The issue is in my dreams I’m dating my boyfriend but I just can’t stop talking to this guy, whenever I wake up I feel guilty. Even worse though, I want to go back to sleep so I can spend more time with him. What does this mean. I do not want to break up with my boyfriend and I’ve never been one to think about what else is out there, but I’m quite literally falling for a guy I created in my head. Please help!!