This is your earlier post: www.mumsnet.com/Talk/relationships/1300745-Im-a-slut-and-he-wont-let-go
I've had a look at some of the numerous responses you've made on various threads and you've given some excellent advice to others and I hope you'll accept my obsevations in the non-judgemental manner in which they are made.
From those responses I've ascertained that your teenage years were somewhat dysfunctional and at one point you worked in the sex industry. It also seems that you hold a torch for your 'third serious boyfriend' who you wish you'd 'followed to Australia'. Did he ask you to go with him? Did he inidcate whether he'd be overjoyed if you turned up unannounced on his doorstep down under?
Sex in one form or another appears to have been something of an issue for you for some considerable time. My concern is that is that you may use sex as a form of self-harm - from your response on the 'sister raped and self-destructing thread' I got the feeling that you wished you were careering around Europe stoned and vulnerable to abuse.
It also became apparent that you regard life without drama as 'boring' and this leads me to wonder whether your latest period of monogamous domesticity, albeit brief, has resulted in you craving a less predictable and staid lifestyle, and whether your current intention to 'rip our lives apart' is motivated more by your desire to interject some excitement into the monotany of having no other outlet for your impulses.
Have you had a confirmed diagnosis of bi-polar disorder?
Looking at your issues around monogamy, it would seem that your dh may be willing to reach an accomodation whereby you can get your kicks elsewhere within 'certain limits and boundaries'.
However, you are saying that because of your lack of 'romantic commitment' to him, you're not sure you can stick to 'boundaries'.
Taking your relationship with your dh out of the equation, the reality is that if you are living on your own with your 2 young dc you will need to observe strict limits and boundaries if your desire for a non-monogamous lifestyle is not to adversely impact on them.
In fact, without the services of babysitters and the like, it's probable that celibacy will be the order of the day - and the night as well, and I'm wondering if you've thought through the likely outcome for the 3 of you if you uproot your dc and return to the UK.
As the present time, it seems that your dh may be better placed to give your dc the stability and order they need in their lives and I'm wondering there is any way that you can live apart from dh for a period of say, 3 months or so, while you continue to reside in the UK and benefit from pyschiatric services that are less overstretched that the NHS.
In essence, I'm suggesting that you may be best advised to take your emotional pulse every few months rather than checking it everyday and reacting to its highs and lows on an ad hoc basis.