No Spark..

So my boyfriend and I have been living together for seven months now and I've recently noticed a huge decline in our sex life. We went from being intimate every day (a few times I might add) to being lucky if we're intimate every three or four days. If I try to do anything to my bf, he seems annoyed and totally uninterested in me and everything that I do. I just want to be with someone who wants me and makes me feel better about myself instead of worse, but living together makes it hard to just walk away from everything.. I'm so tired of it and I need advice 😔😔