Hi Mick,
I'm sorry nobody has responded to you, I've had a hectic few weeks which has included a weekend Christian conference called Influence.
My husband was like you at 24 years old wanting to have a quiet life whereas I liked going to night clubs and so on. Even after 21 years of marriage we joke that we are like chalk and cheese. Our interests / hobbies are different but do overlap these days although we both like animals, places of interest and history. Your (ex) girlfriend could have made more of an effort in your relationship and should have made more of an effort to understand depression. I covered up my depression for many years, my sister only found out since our mum died (2011) that I suffer with depression, have been suicidal over the years and self harmed. I told her in a letter ~ we don't live close together ~ but she has never responded to this. I tried telling my parents years ago but I may as well told them that I had flu. My mum believed I was just moody and a drama queen over the years and regularly told me to pull myself together. My dad knows I am suffering with severe depression now and I am contemplating on whether to tell him all the gory details. However the point is loved ones should try to understand what depression is.