How to name it

Is it possessiveness? love?or any kind of mushy feeling ???, how to name it, I am puzzled and don’t have an answer to the questions.
When does a problem arise in any relationship ? is it due to the possesiveness one has, or to some misunderstanding I am bafflled by such questions that arise within me.
I today experienced a similar one, and I am still searching for an answer to it.
am I the reason, or why do I and how do I??, my questions are still unanswerable.
Am I overreacting to a situation???, not sure or not able to adjust to it ???dont know.................
But to conclude this post, not for the sake of concluding..... any relationship what ever it may it has to have a transperancy!!!!! ( Still unclear) :)