Help me out! Relationship problems

So i’ve been in a friends with benefits relationship for a year now. But here is the deal. We do everything that a normal couple does. We hold hands, say i love you to eachother and ever our friends reffer to the other one as “boyfriend/girlfriend”. But we dont say it to eachother although you can see the love is there. At least from me. This is Why you dont get into fwb relationships because there is always one that falls in love. And Its me.For the past month He gained this really depressed mood. He is lazy to go out, shows less interest and so on. Even His Bestfriend came to me with this same problem. Im starting to think that Maybe He is bored with the “relationship” (i dont think He is cheating) and i get very sad because we only see eachother once a week due to his lack of interest(as i see it). So im wondering If i call it quits and give myself a little break or try to stay with him.