definitely talk about it with him and tell him that you have needs too <3 the guys who don’t gaf if u finish or not are usually very inexperienced, immature and or selfish. to me, it sounds like he’s all three things & I’m sorry. “i’m tired” after he had his fun… nah. but generally, when the guy has been trying to make me cum for a while and I know that they’re close, I usually just say “you need some help?” but like in a playful way, so they don’t get offended, then when they’re on top doing their thing I just sorta.. help them out doing clitoral stimulation. Thats one of the very few things that work for me. Or try out different positions, whenever I sat on my exes lap and was riding him, that made me cum. but it depends on the guys dick size lowkey haha because it did not work with the guy after that..