<human>: Im not asking for advice to bring her back to me. I need suggestions to make that day really really memorable for me. I wont be attending her marriage.

Im working in an IT company. I've had bad relationships with other girls twice just because i thought love could happen twice. Shes not interested in me,I've proposed to her thrice but in vain. I've always hoped that I could one day be with her. Its been 7 years since i fell in love with her(infatuation If that would make sense). Now its all coming to an end,I've been in touch with her as a friend hoping that I could one day win her. 
Its too late i guess.I need suggestions to make that day memorable for me.
 No i dont want to run away from those memories.

Can you give me the gist of the text in a nutshell?
<bot>: crush of 7 years is getting married to another guy,i want to do something on her marriage day,please advise.