Can I save the spark?

so recently I have been having these weird feelings where I can't seem to get that excited about my boyfriend (inside and outside of the bedroom). like sometimes he'll be doing all the things that usually turn me on and I just want to push him off! I haven't said anything because I don't want him to think I don't love him. we've been together for just over a year and I do definitely still love him... I'm just really worried that I've lost the spark for our relationship and I don't know how to save it! 😬😞