Dear Nicole,
When things are happening in a relation, 85% of people don't or
couldn't analysis whats wrong with the present problem, because
they are the main actor/actress involved in the 'play'. Audience
always knows better when watching drama, about who is the mistress,
which ass rape xiao long nui, etc. (The condor heroes wan ar, not
this forum wan - lol)
So what am I getting at? 
There is no smoke without fire. Everything happens for a REASON.
Firstly, you said this is a 2 years relation and within this
relation you broke 3 times, 2 times you initiated it. Like I always
tell people when counselling them outside here, NEVER use the word
'BREAK' just to solve an existing problem because thats the start
of your eventual fall in the relation. Why? Sorry but to say, it is
the most inefficient, most lazy, the most unproductive &
undeveloping way to pave for your relation. Look at this cycle
below
Beginning of Problems > Problems exists and lingers > *not
enough effort in both party trying to solve problem* > sudden
break > regret > patch > BUT, problem still there! People
always think patch liao, everything is cleared, such a big and huge
mistake and error.
Ok, before any misunderstanding, let me example about the part of
*not enough effort in both parties*. I can tell you lar, most
problems can be solve if both parties make the effort and wants to
save this relation, but if for the rare cases, then perhaps leaving
him/her would be the best thing because there is already no reason
why you should stay. Is that in your case? I doubt so. (correct me
if i am wrong because you said alot of things happen, which means
to me that alot of little small, serious but not fatal things
happened adds up together that makes it seemed so alot. If there is
something so fatal, you would have type it here or already made the
decision to leave him and never to come back, unless you yourself
WANTS to be held back) 
You say he is being sick of being attached when alot of things
happened. Remember the break-patch cycle? Relation is like climbing
infinite steps up to somewhere - when you break, it's where the
both of you stops at your own current step and have to come down.
That represent the time for healing needed to take place. When you
patch, you have to walk the steps again. Think about this, what is
the feeling you will feel when this cycle repeats 3 times of
walking up and down? TIRED. 
You bf initiated the last time you patch and why not you again?
Since last time, it has been you right? So you are hesitating,
which means there is an consideration. Are you listening to your
own wisdom or just blindly follow your overflowing emotions? He had
ask for patch and you accept it, why? Did you actually think about
what you want in this relation? Or it is... because the both of you
are so used being together that when you walk your own separate
path, you feel funny - This fear of venturing into the unknown
alone.
Are you sure the relation you leading involved pure love and not
out of habit?
Answer every single question I thrown without much thinking and you
will know the answer you seek already, nobody needs to say anymore.
You said you want to find a way that could solve this problem and
you told yourself that the only way is to break - realise why?
because this word 'break' is the way both of you solve your problem
and when time pass (like now 2 years already), there is no way you
could solve anything else, because the most critical way has
already been used. Whats more critical then breaking in a relation?
I see that both of you are at the stage where you are unable to be
lovers, but too good to be friends. So what if you have already
gone for 2 years? its high time the both of you should take time to
reflect and a decent break - because you both had never had a
decent rest, long enough to reflect and think about what you both
want instead of forcing a relation to go on - like a fatigue horse.
Prays
