Sex compulsion and depression. Correlated?

Do you guys think there's a direct correlation between a constant need for casual sex and depression? I'm asking because I think this is what's been happening with me for years now. About 5 years ago, when my family was going through some rough times and I was alone and unemployed I started to "need" sex constantly, every weekend. With different guys. I know it doesn't seem like much but before that I would be ok with having sex once a month or so, if I was single. I've read some stuff about compulsions (I don't like the term "sex addiction", as it is not really an addiction per say) and depression and I was wondering if anyone agrees with that.