Hi! I actually think being in a good relationship and having friends is nice, and I'm not sure feeling the need for them is an addiction. However, I can understand how breaking up with somebody can lead to depression.
Of course, we are here to be friends with you. But it's important, if you can, to try to find some other real-life people, too.
Are you in therapy? I think that would be a good idea. Therapists can be supportive and help people to have someone who is caring in their lives.