Him - "LOVE DOESN'T EXIST FOR CELIBATE PERSON"
Her - "I WILL PROVE YOU WRONG"

Tropes:

Age gap (2 years)

Future Surgeon x Future Businesswoman

You fell first and harder

Grumpy x Sunshine (You)

Practical one x Delusional Fool

Anti-Romantic x Romantic (You)

Complete opposite; Opposite attracts

Hates you but You love him.