Who ? I don't think we ever saw him date someone ?
yes they have their own story from when they was younger
Are you perhaps talking about ? http://www.mangago.zone/read-manga/guang_xiang/ Because if yes they're not the same person at all, even if some people confuse them (I don't get how but oh well)
If you're talking about another story then I must have missed it
oh okay I see
is he still dating the childhood friend? The boy from his pass.