Technically speaking,
it seemed that you are not in need of an advice (for you have a
decent and much more fulfilling present currently), more of being
interested in a third party analysizing your past.
P.S: People please chill and practice /me ignore; there is no point
with this exchange of words over the internet. Be a little more
tolerent or least for the sake of other denizens living in here.

***
If you have truely
thought hard enough, you wouldn't be walking one huge tormenting
circle to get to what you ought to go eventually in Love.
Partially, it has to do with haste and the lack of wisdom to
decipher what you really want. You got yourself all sort of man,
whom you ultimately end up in much misery and pain with them.
Leaving out the first relationship (Our relationship is usually
much different from the rest. Not merely because its our FIRST,
rather, its due to the astrological and karmic notion of our First
Love. Simply term: Being a 'greenhorn' in Love, our freewill
against Love is usually the weakest in our First Love. We are able
project stronger freewill and choice in our future partner or
potential, but is usually no in our first)
Your second is an afflicted relationship. You know it
yourself.
Your third is also an afflicted relationship - with you
demonstrating free will and mirror the affliction to him. In the
process, you created a period of pain and lesson for him.
Your fourth is also an afflicted relationship - with him
demonstrating free will against you and created the period of pain
& lesson for you.
After that, your past returns and you goes back repeating lessons
again.
Your first, being karmic in nature, returns and leaves the EXACT
similiar ways/reasons he left you before. (C|oUdiSm 6th Law of the
Old World - Law of Mirror Ending)
Your 5th is a replica of your 2nd. Issue involving finance, his
family and related thingy. And that is where your abortion took
place as well.
your 6th is a replica of your 3th - with you getting involved with
an man who cannot commit and you bring the karmic lesson into him
(and more particularly his gf of 6 years) and his relationship. It
was your choice to leave as well.
And now your 7th is another good relationship like your 4th.
***
I have seen people's
relationship from zero fighters to as atrociously high as 30+ ex,
but usually the core lessons don't differ much. It's how Love
cosmic lesson wants to teach you based on our early childhood
formation, psychological state, karma and astrological
birthright.
To leap into a new relationship after every conclusion; doesn't it
explain partially why you went through your cycle ONCE more? In
this aspect you are so much like mine best friend; she has more
past relationships than you, but that's not the point. The thing is
that she NEEDS relationship because the emotional security is not
there. Everytime when she is alone, her emotional mind would be
screaming for dependancy: Woman in their first love loved
their lovers, in all others, they loved love.
To make matter worst, she is one woman who can get almost any man
she wanted. People flocked and she attracted negative man that brings negativity
into her life.
You are in the same category.
P.S: We have the ability to create a fulfilling relationship, but
before that could happen, the least we could do to minimize
difficulty, is to avoid any hasty relationship decision that we
regret in the future. 
Cheers