I used to ask myself some of these qustions so much that I flat out asked them of my therapist at that time.

"why do I have to be the one to call when we have a falling out"

Because she was giving me time to think the situation through. Sometimes when things get heated up during therapy sometimes the arguments are not about a disagreement between the therapist and the client. sometimes its about the emotion of being made to look at the problem from all sides including the sides the client does not want to think about or admit happening with them or their life. being made to look at your problems and past experiences is not easy.

Another reason she gave me is that

friends chase each other down to make sure each other is ok and work problems between them out.

Therapists are there to do a job and that job is to work during therapy on things with the client not chasing down their clients everytime one does not agree with them. If they did that they would not have time for therapy sesssions because they will be so busy trying to be their clients friends calling them to work out disagreements each and every time the client does not agree during therapy sessions with the therapist. Therapy isn't chatting with a friend its having problems and looking at all sides of that including times when clients don't agree with them.

"Wny do I always feel guilty after we argue and fear losing him and feel a need to apologize"

what happened in the past as a child. in my family if there was a problem between me and another family member it was my fault and those that did not agree with me left the room or whatever.

And whats the first thing a parent tells a child when caught fighting with a sibling or anyone - "go say you're sorry to so and so and you won't do it again" Children are trained from the get go that whenever there is a fight that they have to go and say Im sorry.

"Why does he always seem to know the best time to bring something up that I don't even think is on the radar"

They have been trained in college and during their internship and supervision to not only pay attention to what the person is saying but also their body language - the way the client is sitting, facial expressions, movements, tone of voice, eye contact and so on. It is by using these "invisible messenges that therapists are able to know when to bring something up.

"Why do I care so much about someone I hardly know"

Therapists are a "captuve audiance" we have their undivided attention for a whole 50 minutes. Everyone likes having someone pay attention to just them.

Also human beings are a "social species" they can like or dislike anyone that they meet upon first meeting the other person or learn to like them by finding common grounds. Humans have learned that to survive they sometimes need other human beings. When a person finds common ground or agreeable characteristics in the person they are seeing they "like" them. When there is no common ground and no agreeable characteristics then the person does NOT like the other person. just part of being human.

"why does someone take the interest in my well-being like he does"

Because that is a therapist job. they are getting paid to take time with their clients and be interested in what the client is doing. drop the financial part of seeing a therapist and see how fast therapists loose interest.