Opinions on the "Will you be my Girlfriend/Boyfriend" conversation over the phone?

I personally feel like that conversation should be in person, and I know most would also agree. I'm talking to a woman right now and I want her to be my girlfriend, and I know she would say yes. We live hours apart and we probably will not be able to see each other for a couple weeks. Should I still wait to ask her in person, or just ask her over the phone?

Opinions on the "Will you be my Girlfriend/Boyfriend" conversation over the phone?
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