Hi.You entered this “agreement” as FWB. Often, someone ends up wanting more and it is usually the woman. Whatever this seems like to you….”he misses me, we don’t always have sex etc.”, he has made it clear to you that this is “all there is”.
My advice is to break it off before you invest more time and emotion. Take some time,recognize that you actually are ready to be in a relationship and look for someone with similar goals and desires. Now,it is possible he may suddenly step up his game, but I would not expect it. Move on because you want and deserve more.