Ways to spice up your sex life ??

Me and my boyfriend have been together for a little over a year, within that year he's moved in with me. We used to have sex all the time now we will go weeks sometimes almost a month without it because he's "not in the mood". I know he's not cheating on me at all I just feel like we need something new yanno? Someone give me some ideas.😂🙏🏻