You've done your best, and the rest will be in the hands of the recruitment team. But whatever happens, you'll be ok.
Hmm, that must've been rough when you bumped into your ex. The relationship ended because something didn't work out, so going back now would most likely yield the same result. When we love someone dearly, we want to protect and be with them constantly. But at the same time, we also let them go for what they feel is best for them. We can learn to appreciate the good times we've had, and mourn the end of the relationship. Loneliness comes from the sudden emptiness where it was once filled by your ex. You can fill that emptiness by filling your time with friends/family/football club, or as The Other Guy have mentioned, meet new people.
You could also spend time discovering new hobbies, learning new skills that you couldn't do while you were in a relationship. Or picking up an old hobby again. Explore new places, things etc. Things to take your mind off the loneliness while you heal thru your heartbreak.
Hopefully that helps you Brett, happy to listen to you more.