OK, I have watched on catch up, now.
I, too, love Ira, he is perfect for River. Gentle but somehow guiding him along.
I think future psychiatrist sessions may bring up more about his past and what else is he forgetting? In ep 2 (I think) Stevie tells him to tell the police what they talked about in the Chinese. He's remembered that she gave him the money for Frankie, but not what they discussed, presumably it's relevant.
The themes of the crimes River has been looking into is really interesting too. What about Riley's girlfriend's other man (forgot the name!) seeing someone drop off the car but not seeing who they were. Who was that? The man from the CCTV footage?
He shut Cream out of his flat before Bridie came round, is that him getting rid of him, denying that part of him?