Jenson does overthink things, but I can kind of understand it. He doesn't want to hurt Merrick. At this point I don't think he's capable of completely walking away from Merrick. It's not just the sexual tension, which was really hot by the way, but he loves him. I agree with Val though - Merrick is a very patient man, but he won't wait forever.
It looks like Jenson isn't the only Shey who is having trouble dealing with their emotions. Audra seems to have feelings for the doctor and has no idea what to do with them. Maybe Jenson can return the favour and make her smarten up and see what's in front of her.