I think it's quite difficult to be the exact opposite of someone? Admittedly people can have a lot of differences, but I believe if you try hard enough then it's always possible to find common ground. I am quite a bit more of an intellectual type than most others in my family, but that's something they've always supported me in and they, especially my mum, enjoy telling their friends about how 'brainy' their daughter/granddaughter/niece is. I am a complete klutz when it comes to using my hands, I'm always bumping into stuff and I'm completely useless at manual work, even simple household chores, which they'll always tease me about, but in a friendly way.
I think if you love someone then it shouldn't matter what differences you have - you don't need to be exactly the same as someone to support them in the things they enjoy, or to try and have a conversation with them about something you're both interested in. As long as you try and always accept a person for who they are, then I think you can't go too far wrong.