Hi

I am at my wits end as my realationship with my wife crash's into ablivion and she tries to leave saying she no longer loves me.
Her behaviour has not been "normal" for many months and after reading some of the info here i am really worried she may be Bipolar.
I will try and keep our story brief but would value your opinions plz.

My wife and I have been together for around 15 years and were married 2 years ago, we have a son who is just about 4.
My wifes first episode of depresion happened about 10 years ago after having issues with work and the college course she was on. She was treated for this with antidepresants and changed jobs and she seemed to be ok. She has always had a tendancy to over think situations and come out with a negative conclusion, she also went through a quite traumatic break up between her mum and dad when she was young and has always felt controlled by her mum.
Our more recent problems started about 4 years ago. my wife went through a very bad pregnancy and then was borderline post natal afterwards.After stuggling through the early part of our sons life making the massive readjustmnets you do we seened to making real progress towards happiness. We made plans to be married and had a fantastic wedding day.
After this things started to go really wrong. 1 week after we married my little brother died suddenly which affected us both very badly.
She then also started to have massive issues at work with someone in her office who was a complete nightmare. The woman had previously caused problems everywhere she had worked.
Unforunatley due to the process that had to used to remove this person the situation dragged on for 18 months leading to huge amounts of stress in our lives. During this time she was signed off work several times, lost huge amounts of weight ( she siad it was the one thing in her life she could control) and was generaly in a complete mess. During this time we tried to have 2 family holidays which both ended in disaster, 1 was flooded out while camping, the other where she ended up with severe food poisoning again while camping.
To finish off our disasters just as her work situation resolved itself and she was starting to feel better her grandma died.
This is where our problems really started as the cremation was due to be at the same place as my brothers and due to my own issues i felt I could not go with her. We then rowed teribly on the night of the funeral as our emotions boiled over.
We muddled through for a month but she then decided to see her doctor as she realised she was not feeling well.
She was again perscribed anti depressants but didnt start taking them straight away.
During this time unbeknown to me she struck up a friendship with a guy who had been chasing her at work. She swears they were nothing more than friends but it only came to life when his wife found out and strted making threats against them both and the police became involved. At this point is where I found out and she says the friendship and contact ended.
During this time many strange things strated happening. She became convinced our marriage was cursed due to the problems we had encountered. She went and got herself 3 tattoos even though she had always said she didnt like them. She became convinced everyone was on my side (even our doctor) anyone i spoke to would imediatly be against her.
She went on several spending sprees and when challenged said she didn't care. she set up a secret bank account and took money from our joint account and hid it in there. She claims this was incase I kicked her out. She then spent this mony on another spree.
She had always had fairly normal desires in the bedroom but all of a sudden even though she didn't love me she was dragging me off to the bedroom for kinky sex sessions.
She has made several referances to wanting to commit suicide.
She had always been an early to bed person and suddenly wanted to stay up til all hours watching mtv.
She went from drinking very little to be so drunk she couldnt remember the night before.
She started to make grand plans for sometimes us and sometimes just her to sell up and move away to live near some of her realatives a couple of hundered miles away.
Several times over this period our realationship has settled down and levelled out and then she seems to have a bad day and all of a sudden we our all off again and separating.
She is now convinced that she is ok and there is nothing wrong with her and there never has been and it is only our realationship that is causing her issues.
When she explains our problems to people when i am not there to balance the converstaion she must sound totally convincing as she has justification and reasons for all her behaviour.
we have recently started going to relate, she initially resisted this alot as she did not want anyone telling her what do do or trying to fix our realationship. After just 2 sessions the councelour has identified some of the problems from her past that she is superimposing on our realationship but again my wife is backing away from these sessions as we hit some of the real reasons for our problems.

sorry this must seem a complete jumble of stuff but im just so close to going under myself that I need some advice and opinions and help.

Many thanks