This issue has many aspects you may or may not want to consider. Really, it is all down to you and how you feel, but as much as one can say it doesnt matter what your dad thinks, it may matter if, for arguments sake, choose to marry / have children with this guy.
I worked with victims of racism and one may find it surprising that even family members can outwardly be racist to someone that has become part of theri family. I am not saying you should let this put you off, but you should consider the little things in life, that often go unnoticed when you are in a relationship with someone from your own race or religion, such as how much does religion mean to you, if you haev children, what would you teach them, would there be a dispute about the role of women in the home, as in Asian culture, even in modern day Britian, there can still be expectations about which gender does what....I am not stereo-typing, I am just saying that when it coems down to it,in life, it is the smaller things that matter, as dsagreements with these often reveal deeper rooted issues that lead to bigger problems.
Love is the basis of a relationship, and thousands of people live happy lives in mixed race relationships; dealing with the views of family members is always going to be there, regardlessof racism or prejudice....they can not like the way you dress, they can be judgmental if you havent been to university, or that you cant cook, etc etc.
I think it's best to look at the bigger picture and weigh up all the pros and cons. At the end of the day it is your life and you will decide how you want to love it. Just remember the guy you like should be someone you like for who heis and vice versa, and that is a good start.