relationship help: space between a couple that live together is good, even when one is really upset right? - Help.com

Spending too much time together is a bad thing, this being from personal experience on several occasions. Now what this really breaks down to is make sure you don’t work together and if you do, don’t work in the same department and give each other space at work. Also, talking and socializing is a must, but telling each other everything about one another very quickly is a sure fire way of losing interest. This is mainly because we all subconsciously want mystery in the relationship, we want surprises.

I’d say if you’ve already stopped loving him then you can try to spend some time alone more often, but finding that spark again is going to be hard.