What kind of situation am I in with this guy?

Recently I have become a FWB with someone I have known for some time. When we first made this arrangement he had stated that he didn’t want or believe in relationships anyone because his ex pretty much fucked him up. Though together they have a beautiful baby. Anyways, this was my first FWB situation. It’s been a few months now and from my understand of what FWB situation is, I believe that it has turned into something more, tho we have never discussed it. I spend more than half of my time at his place with him. And every weekend we get his baby. Who i apsolutely adore. He cuddles me, holds my hand, kisses me, play fights with me and makes sure i’m ok. He will text me first after i have left his place. And just text me for hours. When I return to his house he right away has to tell me everything that has gone on since I have left. He gets offended when I say that he only wants me around for sex and to be a babysitter. He has said he doesn’t mind the idea of me moving in. He says he likes spending time with me and having me around. He has now gone from never wanting a relationship to telling his roommate that hes not ready just yet. I think he is scared. He has said that he isn’t a guy to talk about feelings because they freak him out. He knows that I like him, care about him and I think I have feelings for him. Basically, is this normal in a FWB situation or does it sound like more? I am young and never been in love.