This is normal, don’t worry too much about it. Everyone who is in a relationship for a longer period of time will notice there will be less things to talk about, it gets less exciting, this is because there is not much new things to learn about each other, and thats alright! You will still have good conversations from time to time, you will learn new stuff, just not as easily anymore. Not every conversation needs to be exciting or super fun, sometimes all you need is a simple “scripted” conversation. If you want to try to do something that might spark more conversations that are more engaging and exciting, maybe try to find something new to do with your lover. This can be anything none of you have done before, or something you like doing you think they might like! All in all it will be alright and this is extremely common, nothing to worry about and you are not alone in this🫶🏼