Yes, stop being so jealous of your friend. Look, apparently this therapist really is a great guy. So good that your friend referred you to him. So good that you've really liked how he's worked with you. So good that she felt comfortable going back to him after a year away. That is awesome. You are both really fortunate to have found apparently a great therapist. My guess is that he is quite capable of caring about, working with, more than one person at a time. I suspect he has good working relationships with many clients beyond you and your roommate. That doesn't in any way diminish the working relationship he has with you. It just means he's a great therapist and is quite capable, as most therapists are, of working with many people at the same time.