Higher libido

So back when me & my man met 6-7 years ago we were of course in our honeymoon phase. We had sex all the time, couldn't keep our hands off of each other. Now, we still have sex but I'm lucky if I get it once a week. He complains about how he's tired from work and wants to do it on weekends. I try to understand that i really do. I just DO NOT want to be that couple that only does it on the weekends, or it's "planned." No offense. Like I want spontaneous, bend me over in the middle of the night on a week day sex when we feel it! I know that's not always possible but even like once or twice, at least a try, id be happy with. Idk what to do! I feel so rejected. We don't have kids yet either. He doesn't last long but he at least gets me off first. So it really feels like we don't have sex at all. It used to really be a way for us to connect...but idk. I'm trying to be understanding and not ask too much so I just let it go. But then yet I find millions of porn on his phone and it just pisses me off.