What are some signs that a therapist may have poor boundaries with their clients?

Sense of competition with persons who are important in the client’s life.

Disclosing feelings, fantasies, and experiences to the client in ways not related to the work the client is engaged in.

Eager anticipation (or anxious anticipation) of the next session in ways that distract.

Do opposites attract? How often do you see weird couples like a guy/girl dating someone who is boring with no sense of humor ?

Session-expressed curiosities about client details not relevant to the therapy.

These items can happen fleetingly, briefly, in any therapy, but if they’re frequent, it’s definitely time for the therapist to get some good, solid supervision/consultation.

Failing to mention the client in supervision/consultation, out of fear the supervisor/consultant will advise return to ordinary healthy boundaries.

What should I do to get over a relationship?

Serious disappointment when the client cancels a session.

Routinely going over the time limit with certain patients, compromising the time for the next client.

Struggling with fantasies of deeper connections with clients, whether sexual or parental or other intense or intimate relationships beyond psychotherapy.

How common are novels, animes, or mangas, that are both coming of age and thriller? What do you think of these kinds of stories? What are some examples?

Off the top of my ancient head:

General Introduction to Boundaries from Panahi Counseling:

Obsessing about clients outside of work hours.

Why do Democrats keep calling Patriots/President Trump supporters "sore losers"? Do they purposefully ignore the massive fraud that took place, or genuinely think that there was zero fraud?

Frequent phoning or texting of clients to “check up on them and make sure they’re OK.”