Do i leave or do i stay...

We’ve been together going on 3 yrs. we have an 8 month old baby boy together. I love him with all my heart, but I feel so disconnected with my partner, Ive tried talking to him, Numerous times.... Ive tried so much for so long and I just dont know what to do anymore. I tell him how unwanted I feel, How sad I am ALL the time (PS I suffer from clinical depression) but every time he just gets all sweet and affectionate for a few days then goes back into the same pattern.... I have a friend whom I met about a month ago, and he tells me all these sweet nothings, and I know thats what they are.... I dont accept his advances however, I dont hate them... Because they make me feel desired.. Im not sure if that also, factors into my thoughts, however, I do love my partner... I just dont know what to do anymore, I have NO ONE to talk to and I just want to feel something other than this darkness inside me....