Sex Help!

So I've been dating my bf for almost six months now. The sex has gotten progressively worse lately and I haven't been able to cum at all when we're having sex or when he's fingering me. Now when I do it myself I can cum three or four times if it's a good night. I know he's stressed and all but this me not cumming thing is trickling into our relationship and causing me to get really salty with him. I'm always horny around him, I could just look at him and bam 💥 my panties are dripping. We usually spend the weekend together and I always say to him it's our time to be with each other, but he'll be like I'm too tired or he'll miraculously have homework to do that he said he got done earlier in the week. I just don't know what to do or to say to him? I love him so much and wanna make this work but it's frustrating me when he either can't make me cum or just won't out right have sex with me. I just don't feel like he's attracted to me anymore.