Loki was neverous. He didn't seem to know what he was going to say to his brother. Seeing his brother with his friends made him feel left out, aside from the fact he was an adult. he had no friends. Though he didn't think the Avengers would accept them, He wanted acceptance. But after all he had done to them, he didn't really think that was going to happen.
He could see Hawkeye in there, He knew that guy really wouldn't be pleased to see him at all. Loki knew he had probably done some mental damage to Hawkeye when he took over his mind.

Really Loki couldn't blame him if he was afraid. He headed to the front door with Riza. He took a deep breath and wondered what he was going to say, His heart was beating quite fast.
Can't do this, I can't do this. Loki thought. 
He just hoped they wouldn't all try to attack him.