Low sex drive causing relationship problems

I need some advice... me and my boyfriend have been together for almost 5 months. Everything started great. He is the love of my life and I want to spend forever with him. However, the last month and a half everything has been off. I’m so stressed because of work and life in general right now so my sex drive is almost completely gone. I suffer from depression and anxiety so it’s already really low.. but now my boyfriend is almost always bummed out because I’m never in the mood. Almost every day is an issue. So because of this I tend to get bummed out too. We can’t have fun like we used to because he is always down. He keeps blaming himself when it’s not his fault. I just don’t know what to do. I feel like things aren’t going to get better unless my drive increases. This has been an issue in every relation I’ve had. What can I do???