Not wanting to kiss my boyfriend

More times than not but in more recent times I just don’t have the desire to kiss my boyfriend like I just literally don’t want to and when he goes in for a kiss I’m not very into it and just make it into a peck but he’ll pull me back in and it’s just not desirable and I want to pull away.

Is that a sign of me not wanting him anymore? Or do we all go through this at some point?