relationship issues 😬

For background info, my ex and I dated for a year. We promised alot of things. I got really depressed, I almost killed myself during that. But my ex and I were/still bestfriends. We talk every day, we also talk about how happy we are, etc. just like we did when we dated. We both tried to find other people but we stated that it doesnt feel the same. I think its perfectly fine the way it is now but my so called "friend" say that I should leave him in the dust, stop talking to him, liking his stuff, etc. we both clearly need each other. Is it wrong to do all this? Yes, Im young, but I just want advice.