Laura (Old Scars, Future Hearts)

Laura is the first girlfriend of Alex Karev.

History
Back in 1994, Laura was dating Alex Karev. She used studying for a test as an excuse to come over to Alex's house and spend time with him. While they were hanging out, his mother came through the room, confused and believing their were aliens in the house trying to get her. Laura watched as Alex restrained her and gave her her medication, which she had forgotten to take that morning.

Later, Alex went to a party, where he overheard Laura telling her friends about what had happened and how weird it was. She wanted to end things, but hadn't done it yet.

Romantic
She dated Alex Karev while they were in high school.