Dean could not bring himself to say yes to Crowley. But he couldn't say no either, or Cas will die. He could feel this bond, it connected Dean to Castiel. If one person dies, so will the other. It's a mental bond.

'Fine!' Sam screamed. Dean heard the voice coming from the right of him. Crowley ordered the demons to stop the spell and to release Cas.

'Good.' Crowley said. 'You will not go behind my back, because if you do, this will be happening again. Not just to darling Castiel, but to all three of you. you understand?'

'Yes.' Sam said. The next thing they knew was that they were back in the bunker.

'What the hell?' Sam said.

'Cas, are you ok?' Dean asked after Cas collapsed in a heap on the floor. Dean rolled Cas over to see all of the cuts, bruises and blood on Cas' shirt.

'Oh, god!' Sam said. 'We have to get him to a doctor.'

'What do you think the doctor is going to say when he sees the light coming out of his cuts, huh?' Dean asked.

'Good point.' Sam responded.

'Dean…' Cas struggled. 'Give me 10 minutes and I will heal myself.'

'Um, ok.' Dean responded.

'Alright, going for a milk run!' Sam said from the hall. 'You guys want anything?'

'Nah, I'm all good.' Dean said whilst checking Cas for any marks.

'Seriously Dean?' Sam said. 'You look like his mother. It's really creepy.'

'Why?' Dean responded.

'Because Cas can look after himself. I know you care but not that much.' Sam responded.

'Sam is right.' Cas said. He lifted himself off the table and stood next to Dean. 'I am completely fine now Dean.'

'Oh, alright.' Dean responded, a little sadly. He was only trying to help Cas. He wanted to make sure he was ok.

Dean was thinking about how overprotective he was of Cas. He had known him for nearly 5 years now. He was like his brother, sort of. It would kill Dean if something happened to Cas. Speak of the angel.

'I can see that you are questioning your overprotectiveness towards me, Dean.' Cas said.

'Well, I just don't want you to get hurt.' Dean responded.

'Dean, you should be looking after yourself instead of me. I am much older than you and am capable of looking after myself. I agree that in some cases, help would be ideal but for the past year, it seems as if you are treating me as your pet.' Castiel explained. 'I didn't want to mention it.'

'Oh, Cas why didn't you tell me?' Dean asked. 'I didn't know you felt this way. I'm really sorry Cas.'

'It is forgotten.'

Why hasn't Dean been thinking about this? He is to be protective over Sam. Cas is an angel. 'Maybe I am worried that this bond we have will break. I don't want to know how it feels when your bond to someone has broken.' Dean thought. He went to the library and did some research on 'bonds'. He wanted to know what type of bond this is, and how special it is. He only felt this way towards Lisa. But Lisa, was his love, and Cas was his friend. It can't be… love, can it? 'No way!' Dean thought. He was straight. He loved Lisa, like really loved her. How can he love Cas the same way too? Maybe I'm bisexual?' Dean thought.

'Dean! Dean! Wake up dude.' Sam was roughly shaking him awake. It took him a few moments to realise that he fell asleep on books about bonds and sexuality. Sam gave him a worried look.

'Um, Dean. Don't mean to pry but what are all of these books for?' Sam asked. He didn't know whether to tell Sam. It was still sort of early. He didn't know whether it was actually true.

'Just, some wider reading.'

'Ok…' Sam said. 'Oh yeah, Cas told me to tell you to meet him at the petrol station in an hour from now. I don't know why.'

'Ok then.'