Why didn't Nana ask Lee to be the maid of honor?

The events in Nana and Lee are as follows:

20 1 1 year, Nana got married, Li left her boyfriend who was still in bed, and Wan Li wanted to be Nana's maid of honor not far away; But when Li got married, Nana said he didn't have time.

Later, when Li participated in Kuaiben, she was reunited with Nana. Li thought that her notes in Nana's mobile phone should be "Xiao Ran" or "Ran Ran", but Nana didn't save her mobile phone number at all. Li was so disappointed that her years of hard work finally went down the drain.

When grandma got married,

When Nana got married, Li was threatened by her ex-boyfriend everywhere and took care of her boyfriend in the hospital. However, Li, who was invited by Nana, left her boyfriend in the hospital bed as a maid of honor.

At the wedding, Li Wei smiled and sent a blessing to Nana. After she was busy, she immediately went back to the hospital to take care of her boyfriend. At that time, Li was at the bottom of her life, but Nana showed her love in the program every day. Li couldn't bear to be disturbed and quit the sorority. Nana said, "Li seems to have disappeared in those two years."

Later, Li wandered around and finally met the person he loved most in his life. When he got married, he called Nana and invited her to the wedding, but Nana didn't think he had time to shirk.