Not feeling it😴🙄

Sometimes i can be really in the mood to have sex with my boyfriend and we have the most amazing sex and then other times im not feeling like it at all i just want to sit and talk or go a walk when i visit him and he ALWAYS wants to have sex at some point in the day and if im not in the mood i tell him i dont want to and eventually i just give in and end up having sex with him, he doesnt pressure me its just some days i dont want to and i get annoyed cause he always does! What should i do?🙄🙄