Sex Drive

Alright guys. I don’t really like to put my sex life out there, but this time I need help. My boyfriend and I have been together for 4 years in February. We have sex maybe 5-6 times a year. I can never seem to get in the mood and never really want to. It’s getting to the point where he’s getting frustrated. Not like he would ever cheat on me, but I want to have sex more often. When we do have sex, it’s awesome. I just can’t get in the mood to. Any tips or advice?? Please and thank you!