After the breakup either:
•An extremely drunk Alex meets an extremely drunk Dylan at a club, and don't recognize each other. They end up hooking up, and sleep for the night in the same room. In the morning, Alex wakes up, and finds out it was Dylan she slept with. She waits till he wakes up, and says "I thought you didn't drink a lot?". He responds by saying something along the lines of "You're worth it," or "Just like there's a first for being this badly heartbroken, there's a first for being that extremely drunk,".
•Alex goes on a dating website to find another man with a similar personality. Coincidently, Dylan tries to find a Woman with a similar personality to Alex, on the same website. Both of them remain anonymous under usernames, and decide to meet at a certain park.
•Another reason that Justin and Alex could break up is that they cheated on each other on an online dating site. Both of them remain anonymous under usernames, and decide to meet at a certain park. Upon meeting each other, they breakup because they were cheating on each other.