what should I do?

So for two weeks now my boyfriend has been cuming too fast like we don't even last 5 minutes and before this he was amazing like we would have sex everyday and we would both cum but I am so sexually frustrated and he feels like shit because of it, so he always tries to give me head or finish me off with his fingers but I'm so tired of being finger fucked so I just don't want to have sex anymore but I know he still wants to! I just don't know what to do :/ any advice?