Peter is very, very good at not making friends. It's a skill he's honed over decades, and Gabriel is just one of many people he's chased off. Of course, most people (at least those who aren't paid to spend time with him) give up after the first time or two they talk to him.

And maybe that's why he feels like shit right now instead of the vindictive triumph he'd expect to get from finally getting Gabe to back off. He stays rooted where he is, turning to look around for a moment like he's thinking of seeking out Lucy -- and then thinks fuck it. The TARDIS can be right about one thing tonight; he doesn't want to fucking be here anymore. Closing his eyes, he concentrates...and a few moments later he vanishes from the dream as he wakes up.