HELP!!! 😩

My boyfriend and I have been together for 4 years in March. We started everything backwards at being FWB. We moved in together after almost 3 years and I thought that our sex life would improve. We lived in an apartment and I'm a very private person and I didn't want others knowing what we were doing.. Then we bought a house in October and once again I thought that it would get hotter.. Well it didn't. Any ideas or tips on how to increase MY sex drive?