I need some advice..

🥀{alexys}🥀
I've been in a relationship for 5 years & have a child with my partner but recently I've been feeling.. off?!
 Throughout our years; we've had ups and downs just like any relationship would; but I feel as though it's turning excessive to the point where there's no trust and for me no emotional connection. Like the feeling of breaking ties with an ex and moving on type feeling. My partner went as far as encrypting my phone.. to see messages I send people.. and mind you I haven't cheated on my partner ONCE. I've only spoken to guys about advice and getting to know people to help me grow. As it would be if I were in school and such. It's not a crime. Yet he suggests otherwise. He's over sentimental and gets pissed over the little things. Then when I tell him what bothers me he just cries about it.. and I'm over here like what the hell.. he begs me to be the woman I was 5 years ago but I didn't know shit then; now I do. I was 18 when he met me, now I'm 23. I've explained to him that I just might need space and to figure shit out on my own for a bit; and I told him he might need some too. Just simply to figure out what we really want. And he got all defensive and suggesting I leave our son with him when he works full time as does everyone else in the household; I'm just like why the hell would I leave my kid ?! 
I'd never do that. I know in my heart I feel like I need space to do some growing and maybe we'll work something out but as for now I honestly don't want to be around him. I know that sounds bad; I'd never keep him away from our son; I just don't wanna be in a relationship with him is all I'm saying. I could stay with my dad and figure out the rest I'm just not sure how to tell him. Or burden him with me staying at his house while I figure things out. Even though I'm sure he wouldn't mind cause he suggested I stay there to save money till we get a house; so then again he might take it well & understand. 
Please share your advice 😩